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{adj: X-linked} relating to genes or characteristics or conditions carried on the X chromosome
"an X-linked mutation"

{adj: commutative} (of a binary operation) independent of order; as in e.g. "a x b = b x a"

{adj: concerned} in relation (or in regard) to; especially as in the phrases
"as far as x is concerned"
"where x is concerned"

{adj: decussate, intersectant, intersecting} crossed or intersected in the form of an X

{adj: moderate} being within reasonable or average limits; not excessive or extreme
"moderate prices"
"a moderate income"
"a moderate fine"
"moderate demands"
"a moderate estimate"
"a moderate eater"
"moderate success"
"a kitchen of moderate size"
"the X-ray showed moderate enlargement of the heart"
<-> immoderate

{adj: mutagenic} capable of inducing mutation (used mainly of extracellular factors such as X-rays or chemical pollution)

{adj: opaque} not clear; not transmitting or reflecting light or radiant energy
"opaque windows of the jail"
"opaque to X-rays"
<-> clear

{adj: radiolucent} almost complete transparent to X-rays or other forms of radiation
"radiolucent tissues"
<-> radiopaque

{adj: radiopaque, radio-opaque} not transparent to X-rays or other forms of radiation
"barium sulfate is radiopaque"
<-> radiolucent

{adj: sex-linked} concerning characteristics that are determined by genes carried on the sex chromosomes (on the X chromosome in particular)

{adj: ten, 10, x} being one more than nine

{adj: ultraviolet} having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end
"ultraviolet radiation"
"an ultraviolet lamp"

{adj: uppercase} relating to capital letters which were kept in the top half of a compositor's type case
"uppercase letters; X and Y and Z etc"
<-> lowercase

{adv: therefore, hence, thence, thus} (used to introduce a logical conclusion) from that fact or reason or as a result
"therefore X must be true"
"the eggs were fresh and hence satisfactory"
"we were young and thence optimistic"
"it is late and thus we must go"
"the witness is biased and so cannot be trusted"

{n: Adam, ecstasy, XTC, go, disco biscuit, cristal, X, hug drug} street names for methylenedioxymethamphetamine

{n: Becker muscular dystrophy} a form of muscular dystrophy that sets in in adolescence or adulthood and progresses slowly but will affect all voluntary muscles; characterized by generalized weakness and muscle wasting that affects limb and trunk muscles first; similar to Duchenne's muscular dystrophy but less severe; inheritance is X-linked recessive (carried by females but affecting only males)

{n: Charcot-Marie-Tooth disease, hereditary motor and sensory neuropathy} a form of neuropathy that can begin between childhood and young adulthood; characterized by weakness and atrophy of the muscles of the hands and lower legs; progression is slow and individuals affected can have a normal life span; inheritance is X-linked recessive or X-linked dominant

{n: Compton, Arthur Compton, Arthur Holly Compton} United States physicist noted for research on x-rays and gamma rays and nuclear energy; his observation that X-rays behave like miniature bowling balls in their interactions with electrons provided evidence for the quantal nature of light (1892-1962)

{n: Defender of the Faith} a title that Leo X bestowed on Henry VIII and later withdrew; parliament restored the title and it has been used by English sovereigns ever since

{n: Duchenne's muscular dystrophy, pseudohypertrophic dystrophy} the most common form of muscular dystrophy; inheritance is X-linked recessive (carried by females but affecting only males)

{n: GI series} diagnostic tests of the alimentary canal; usually involves inserting a contrast medium (such as barium sulfate) and taking an X-ray

{n: Klinefelter's syndrome, Klinefelter syndrome, XXY-syndrome} syndrome in males that is characterized by small testes and long legs and enlarged breasts and reduced sperm production and mental retardation; a genetic defect in which an extra X chromosome (XXY) is present in the male

{n: Leo X, Giovanni de'Medici} son of Lorenzo de'Medici and pope from 1513 to 1521 who excommunicated Martin Luther and who in 1521 bestowed on Henry VIII the title of Defender of the Faith (1475-1521)

{n: Louis X, Louis le Hutin, Louis the Quarreller} king of France (1289-1316)

{n: Malcolm X, Malcolm Little} militant civil rights leader (1925-1965)

{n: Muller, Hermann Joseph Muller} United States geneticist who studied the effects of X-rays on genes (1890-1967)

{n: Pius X, Giuseppe Sarto, Giuseppe Melchiorre Sarto} pope who condemned religious modernism; he was canonized in 1954 because of his interest in the poor (1835-1914)

{n: Planck's constant, h} the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second

{n: REM} (Roentgen Equivalent Man) the dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays

{n: Roentgen, Wilhelm Konrad Roentgen, Rontgen, Wilhelm Konrad Rontgen} German physicist who discovered x-rays and developed roentgenography (1845-1923)

{n: Roman numeral} a symbol in the old Roman notation; I,V,X,L,C,D,M represent 1,5,10,50,100,500,1000 respectively in Arabic notation
<-> Arabic numeral

{n: Turner's syndrome} a chromosomal disorder in females who have only one X chromosome; marked by dwarfism and heart abnormalities and underdeveloped sex organs

{n: X chromosome} the sex chromosome that is present in both sexes: singly in males and doubly in females
"human females normally have two X chromosomes"

{n: X ray, X-ray, X-radiation, roentgen ray} electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target

{n: X, letter x, ex} the 24th letter of the Roman alphabet

{n: X-OR circuit, XOR circuit, XOR gate} gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire

{n: X-linked SCID, X-SCID} SCID in male children resulting from mutation of a gene that codes for a protein on the surface of T cells that allows them to develop a growth factor receptor

{n: X-linked dominant inheritance} hereditary pattern in which a dominant gene on the X chromosome causes a characteristic to be manifested in the offspring

{n: X-linked gene} a gene located on an X chromosome

{n: X-linked recessive inheritance} hereditary pattern in which a recessive gene on the X chromosome results in the manifestation of characteristics in male offspring and a carrier state in female offspring

{n: X-ray diffraction} the scattering of X rays by the atoms of a crystal; the diffraction pattern shows structure of the crystal

{n: X-ray film} photographic film used to make X-ray pictures

{n: X-ray machine} an apparatus that provides a source of X rays

{n: X-ray therapy} the therapeutic use of X rays

{n: X-ray tube} a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays

{n: X-raying, X-radiation} obtaining images by the use of X rays

{n: XXX} (genetics) abnormal complement of three X chromosomes in a female

{n: Y chromosome} the sex chromosome that is carried by men
"human males normally have one X chromosome and one Y chromosome"

{n: acyl halide, acid halide} organic compounds containing the group -COX where X is a halogen atom

{n: angiocardiogram} a series of X rays representing the action of the heart and its blood vessels after the injection of a radiopaque substance

{n: angiogram} an X-ray representation of blood vessels made after the injection of a radiopaque substance
"angiograms are produced by angiography"

{n: argument} a variable in a logical or mathematical expression whose value determines the dependent variable; if f(x)=y, x is the independent variable

{n: arteriogram} an X ray of an artery filled with a contrast medium

{n: arthrogram} an X ray of a joint after the injection of a contrast medium

{n: barium enema} contrast medium is injected into the rectum and x-rays are taken to search for lesions

{n: bitewing} a dental X-ray film that can be held in place by the teeth during radiography

{n: bone age} a person's age measured by matching their bone development (as shown by X rays) with bone development of an average person of known chronological age

{n: celluloid} highly flammable substance made from cellulose nitrate and camphor; used in e.g. motion-picture and X-ray film; its use has decreased with the development of nonflammable thermoplastics

{n: centromere, kinetochore} a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape
"the centromere is difficult to sequence"

{n: chiasma, chiasm, decussation} an intersection or crossing of two tracts in the form of the letter X

{n: computerized tomography, computed tomography, CT, computerized axial tomography, computed axial tomography, CAT} a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis

{n: contextual definition} a definition in which the term is used by embedding it in a larger expression containing its explanation
"a contextual definition of `legal duty' might be `X has a legal duty to do Y means that X is required to do Y by a contract relationship that would be upheld in a court of law'"

{n: contrast medium, contrast material} a substance that is opaque to x-rays; when administered it allows a radiologist to examine the organ or tissue it fills

{n: cross-stitch} two stitches forming a cross or X

{n: dental hygienist} someone trained to provide preventive dental service (cleaning teeth or taking x-rays)

{n: dependent variable} (statistics) a variable in a logical or mathematical expression whose value depends in the independent variable; if f(x)=y, y is the dependent variable

{n: derived function, derivative, differential coefficient, differential, first derivative} the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx

{n: dosemeter, dosimeter} a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity)

{n: encephalogram, pneumoencephalogram} an X ray of the brain made by replacing spinal fluid with a gas (usually oxygen) to improve contrast

{n: explosive detection system, EDS} a rapid automatic system to detect plastic explosives in passengers' luggage using X-ray technology and computers; designed for use in airports

{n: factor of proportionality, constant of proportionality} the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality

{n: fluoroscope, roentgenoscope} an X-ray machine that combines an X-ray source and a fluorescent screen to enable direct observation

{n: generation X, gen X} the generation following the baby boom (especially Americans and Canadians born in the 1960s and 1970s)

{n: haloform} compounds with the formula CHX3, where X is a halogen atom

{n: hysterosalpingogram} X ray of the uterus and Fallopian tubes; usually done in diagnosing infertility (to see if there any blockages)

{n: inclination, angle of inclination} (geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis)

{n: indefinite integral} the set of functions F(x) + C, where C is any real number, such that F(x) is the integral of f(x)

{n: integral} the result of a mathematical integration; F(x) is the integral of f(x) if dF/dx = f(x)

{n: intravenous pyelogram, IVP} X-ray picture of the kidneys and ureters after injection of a radiopaque dye

{n: inverse function} the function obtained by expressing the dependent variable of one function as the independent variable of another; f and g are inverse functions if f(x)=y and g(y)=x

{n: mammogram} X-ray film of the soft tissue of the breast

{n: mammography} a diagnostic procedure to detect breast tumors by the use of X rays

{n: myelogram} X-ray film of the spinal cord and spinal nerve roots and subarachnoid space

{n: plane, sheet} (mathematics) an unbounded two-dimensional shape
"we will refer to the plane of the graph as the X-Y plane"
"any line joining two points on a plane lies wholly on that plane"

{n: positron emission tomography scanner, PET scanner} a tomograph that produces cross-sectional X-rays of metabolic processes in the body

{n: powder photography, powder method, powder technique} a process for identifying minerals or crystals; a small rod is coated with a powdered form of the substance and subjected to suitably modified X-rays; the pattern of diffracted rings is used for identification

{n: prothrombinase, factor X} coagulation factor that is converted to an enzyme that converts prothrombin to thrombin in a reaction that depends on calcium ions and other coagulation factors

{n: pyelogram} an X ray of the kidneys and ureters

{n: radiogram, radiograph, shadowgraph, skiagraph, skiagram} a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)

{n: radiologist, radiotherapist} a medical specialist who uses radioactive substances and X-rays in the treatment of disease

{n: radiology} the branch of medical science dealing with the medical use of X-rays or other penetrating radiation

{n: radiopacity, radio-opacity} opacity to X-rays or other radiation

{n: radiopaque dye} dye that does not allow the passage of X rays or other radiation; used to outline certain organs during X-ray examination

{n: radioscopy, radiology} (radiology) examination of the inner structure of opaque objects using X rays or other penetrating radiation

{n: radiotherapy equipment} equipment used to treat diseases with x-rays or radioactivity

{n: regression coefficient} when the regression line is linear (y = ax + b) the regression coefficient is the constant (a) that represents the rate of change of one variable (y) as a function of changes in the other (x); it is the slope of the regression line

{n: regression equation, regression of y on x} the equation representing the relation between selected values of one variable (x) and observed values of the other (y); it permits the prediction of the most probable values of y

{n: regression, simple regression, regression toward the mean, statistical regression} the relation between selected values of x and observed values of y (from which the most probable value of y can be predicted for any value of x)

{n: respecter} a person who respects someone or something; usually used in the negative
"X is no respecter of Y"

{n: roentgenogram, X ray, X-ray, X-ray picture, X-ray photograph} a radiogram made by exposing photographic film to X rays; used in medical diagnosis

{n: roentgenography, X-ray photography} radiography that uses X-rays to produce a roentgenogram

{n: sex-linked disorder} any disease or abnormality that is determined by the sex hormones
"hemophilia is determined by a gene defect on an X chromosome"

{n: sine curve, sinusoid} the curve of y=sin x

{n: symptom} anything that accompanies X and is regarded as an indication of X's existence

{n: ten, 10, X, tenner, decade} the cardinal number that is the sum of nine and one; the base of the decimal system

{n: teratogen} any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples

{n: thulium, Tm, atomic number 69} a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime

{n: tomograph} X-ray machine in which a computer builds a detailed image of a particular plane through an object from multiple X-ray measurements

{n: topology, analysis situs} the branch of pure mathematics that deals only with the properties of a figure X that hold for every figure into which X can be transformed with a one-to-one correspondence that is continuous in both directions

{n: ultraviolet, ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV} radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays

{n: variable} a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity

{n: venogram, phlebogram} an X ray of a vein injected with a radiopaque contrast medium

{n: x-axis} the horizontal axis in a plane coordinate system

{n: xeroradiography} radiography using X-rays and xerographic (rather than roentgenographic) techniques

{v: air, send, broadcast, beam, transmit} broadcast over the airwaves, as in radio or television
"We cannot air this X-rated song"

{v: discover, find} make a discovery, make a new finding
"Roentgen discovered X-rays"
"Physicists believe they found a new elementary particle"

{v: resolve, solve} find the solution
"solve an equation"
"solve for x"

{v: scan} examine minutely or intensely
"the surgeon scanned the X-ray"

{v: visualize, visualise} view the outline of by means of an X-ray
"The radiologist can visualize the cancerous liver"

{v: x-ray} examine by taking x-rays

{v: x-ray} take an x-ray of something or somebody
"The doctor x-rayed my chest"

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