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{adj: ascertained, discovered, observed} discovered or determined by scientific observation
"variation in the ascertained flux depends on a number of factors"
"the discovered behavior norms"
"discovered differences in achievement"
"no explanation for the observed phenomena"

{adj: close, faithful} marked by fidelity to an original
"a close translation"
"a faithful copy of the portrait"
"a faithful rendering of the observed facts"

{adj: decent} observing conventional sexual mores in speech or behavior or dress
"a modest neckline in her dress"
"though one of her shoulder straps had slipped down, she was perfectly decent by current standards"

{adj: furtive, sneak, sneaky, stealthy, surreptitious} marked by quiet and caution and secrecy; taking pains to avoid being observed
"a furtive manner"
"a sneak attack"
"stealthy footsteps"
"a surreptitious glance at his watch"

{adj: nonobservant} failing or refusing to observe religious customs

{adj: noticed} being perceived or observed
"an easily noticed effect on the rate of growth"
<-> unnoticed

{adj: observant, observing} quick to notice; showing quick and keen perception

{adj: religious} extremely scrupulous and conscientious
"religious in observing the rules of health"

{adj: subclinical} relating to the stage in the development of a disease before the symptoms are observed

{adj: unobservant, unseeing} not consciously observing
"looked through him with blank unseeing eyes"

{adj: unobserved, unseen} not observed

{adj: unobserved} not observed
"managed to slip away unobserved"

{adj: usual} occurring or encountered or experienced or observed frequently or in accordance with regular practice or procedure
"grew the usual vegetables"
"the usual summer heat"
"came at the usual time"
"the child's usual bedtime"
<-> unusual

{adv: a posteriori} derived from observed facts
<-> a priori

{adv: a priori} derived by logic, without observed facts
<-> a posteriori

{adv: diligently} with diligence; in a diligent manner
"we may diligently observe the Lord's supper on the first day of the week, diligently preach the gospel, or minister to the saint"

{adv: so} in a manner that facilitates
"he observed the snakes so he could describe their behavior"
"he stooped down so he could pick up his hat"

{n: All Saints' Day, Allhallows, November 1, Hallowmas, Hallowmass} a Christian feast day honoring all the saints; first observed in 835

{n: Ascension, Ascension Day, Ascension of the Lord} (Christianity) celebration of the Ascension of Christ into heaven; observed on the 40th day after Easter

{n: Augustinian order} any of several monastic orders observing a rule derived from the writings of St. Augustine

{n: Bayes' theorem} (statistics) a theorem describing how the conditional probability of a set of possible causes for a given observed event can be computed from knowledge of the probability of each cause and the conditional probability of the outcome of each cause

{n: Brown, Robert Brown} Scottish botanist who first observed the movement of small particles in fluids now known a Brownian motion (1773-1858)

{n: Cinco de Mayo} the fifth of May which is observed in Mexico and Mexican-American communities in the United States to commemorate the Mexican victory over the French in the Battle of Puebla in 1862

{n: Fast of the Firstborn} (Judaism) a minor fast day on Nissan 14 that is observed only by firstborn males; it is observed on the day before Passover

{n: Hasid, Hassid, Chasid, Chassid} a member of a Jewish sect that observes a form of strict Orthodox Judaism

{n: High Holy Day, High Holiday} Jewish holy days observed with particular solemnity

{n: Hippocratic oath} an oath taken by physicians to observe medical ethics deriving from Hippocrates

{n: Martin Luther King Jr's Birthday, Martin Luther King Day} observed on the Monday closest to January 15

{n: May Day, First of May, May 1} observed in the United States to celebrate the coming of spring; observed in Russia in honor of labor

{n: Orthodox Judaism, Jewish Orthodoxy} Jews who strictly observe the Mosaic law as interpreted in the Talmud

{n: Orthodox Judaism} beliefs and practices of a Judaic sect that strictly observes Mosaic law

{n: Pavlov, Ivan Pavlov, Ivan Petrovich Pavlov} Russian physiologist who observed conditioned salivary responses in dogs (1849-1936)

{n: Pliny, Pliny the Elder, Gaius Plinius Secundus} Roman author of an encyclopedic natural history; died while observing the eruption of Vesuvius (23-79)

{n: Rogation Day} one of the three days before Ascension Day; observed by some Christians as days of supplication

{n: Sabbatarian} one who observes Saturday as the Sabbath (as in Judaism)

{n: Saturday, Sabbatum, Sat} the seventh and last day of the week; observed as the Sabbath by Jews and some Christians

{n: Seventh-Day Adventism} Adventism that is strongly Protestant and observes Saturday as the Sabbath

{n: St Patrick's Day, Saint Patrick's Day, March 17} a day observed by the Irish to commemorate the patron saint of Ireland

{n: Sunday, Lord's Day, Dominicus, Sun} first day of the week; observed as a day of rest and worship by most Christians

{n: Tet} the New Year in Vietnam; observed for three days after the first full moon after January 20th

{n: alcoholic dementia, alcohol amnestic disorder, Korsakoff's psychosis, Korsakoff's syndrome, Korsakov's psychosis, Korsakov's syndrome, polyneuritic psychosis} dementia observed during the last stages of severe chronic alcoholism; involves loss of memory for recent events although long term memory is intact

{n: anomaly} (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)

{n: astronomy satellite} a satellite equipped with a telescope to observe infrared radiation

{n: background radiation} radiation coming from sources other than those being observed

{n: background, background signal} extraneous signals that can be confused with the phenomenon to be observed or measured
"they got a bad connection and could hardly hear one another over the background signals"

{n: bilirubin, hematoidin, haematoidin} an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice

{n: cartilaginification} abnormal formation of cartilage from other tissues; observed in some Orientals

{n: circadian rhythm} a daily cycle of activity observed in many living organisms

{n: commonness, expectedness} the state of being that is commonly observed

{n: cosmic background radiation, CBR, cosmic microwave background radiation, CMBR, cosmic microwave background, CMB} (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin

{n: deviation} the difference between an observed value and the expected value of a variable or function

{n: distribution, statistical distribution} (statistics) an arrangement of values of a variable showing their observed or theoretical frequency of occurrence

{n: ecotourism} tourism to exotic or threatened ecosystems to observe wildlife or to help preserve nature

{n: electromagnetism} magnetism produced by an electric current
"electromagnetism was discovered when it was observed that a copper wire carrying an electric current can magnetize pieces of iron or steel near it"

{n: examiner, inspector} an investigator who observes carefully
"the examiner searched for clues"

{n: factor analysis} any of several methods for reducing correlational data to a smaller number of dimensions or factors; beginning with a correlation matrix a small number of components or factors are extracted that are regarded as the basic variable that account for the interrelations observed in the data

{n: field-emission microscope} electron microscope used to observe the surface structure of a solid

{n: finder, discoverer, spotter} someone who is the first to observe something

{n: fine structure} the presence of groups of closely spaced spectrum lines observed in the atomic spectrum of certain elements
"the fine structure results from slightly different energy levels"

{n: formality, formalness} a manner that strictly observes all forms and ceremonies
"the formality of his voice made the others pay him close attention"
<-> informality

{n: frequency distribution} a distribution of observed frequencies of occurrence of the values of a variable

{n: high, heights} a high place
"they stood on high and observed the countryside"
"he doesn't like heights"

{n: hijab} the custom in some Islamic societies of women dressing modestly outside the home
"she observes the hijab and does not wear tight clothing"

{n: histogram} a bar chart representing a frequency distribution; heights of the bars represent observed frequencies

{n: honor killing} an ancient Muslim tradition still sometimes observed; a male member of the family kills a female relative for tarnishing the family image

{n: horizontal parallax} the maximum parallax observed when the celestial body is at the horizon

{n: hypothetical creature} a creature that has not been observed but is hypothesized to exist

{n: index, index number, indicant, indicator} a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time

{n: knight errantry} (Middle Ages) the code of conduct observed by a knight errant who is wandering in search of deeds of chivalry

{n: lipreading} perceiving what a person is saying by observing the movements of the lips

{n: lunchtime, lunch period} the customary or habitual hour for eating lunch
"he observed a regular lunchtime"

{n: meteorological balloon} a small unmanned balloon set aloft to observe atmospheric conditions

{n: monitor program, monitoring program} a program that observes and regulates and controls or verifies the operations of a data-processing system

{n: monitoring} the act of observing something (and sometimes keeping a record of it)
"the monitoring of enemy communications plays an important role in war times"

{n: morphallaxis} regeneration on a reduced scale of a body part; observed especially in invertebrates such as certain lobsters

{n: multiple correlation coefficient} an estimate of the combined influence of two or more variables on the observed (dependent) variable

{n: observation, observance, watching} the act of observing; taking a patient look

{n: observation} facts learned by observing
"he reported his observations to the mayor"

{n: observatory} a building designed and equipped to observe astronomical phenomena

{n: observed fire} fire for which the point of impact (the burst) can be seen by an observer; fire can be adjusted on the basis of the observations

{n: observer, commentator} an expert who observes and comments on something

{n: out-of-body experience} the dissociative experience of observing yourself from an external perspective as though your mind or soul had left and was observing your body

{n: pilot balloon} meteorological balloon used to observe air currents

{n: point of view} the spatial property of the position from which something is observed

{n: protocol} forms of ceremony and etiquette observed by diplomats and heads of state

{n: quark} (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3
"quarks have not been observed directly but theoretical predictions based on their existence have been confirmed experimentally"

{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: religiousness} the quality of being extremely conscientious
"his care in observing the rules of good health amounted to a kind of religiousness"

{n: scallop, crenation, crenature, crenel, crenelle} one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)

{n: sighting} the act of observing
"several sightings of enemy troops were reported"

{n: slip, slip-up, miscue, parapraxis} a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.

{n: softening} the process of becoming softer
"refrigeration delayed the softening of the fruit"
"he observed the softening of iron by heat"

{n: sonogram, echogram} an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs

{n: sonography, ultrasonography, echography, ultrasound} using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs

{n: telemeter} any scientific instrument for observing events at a distance and transmitting the information back to the observer

{n: terrarium} a vivarium in which selected living plants are kept and observed

{n: tracer, tracer bullet} ammunition whose flight can be observed by a trail of smoke

{n: unobserved fire} fire for which the point of impact (the bursts) cannot be observed

{n: view, survey, sight} the act of looking or seeing or observing
"he tried to get a better view of it"
"his survey of the battlefield was limited"

{n: vivarium} an indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions

{n: vower} someone who makes a solemn promise to do something or behave in a certain way
"young vowers of eternal love"
"there are many vowers of chastity but few who observe it"

{n: walking delegate} a union representative who visits workers at their jobs to see whether agreements are observed

{n: watch, vigil} a purposeful surveillance to guard or observe

{v: chew over, think over, meditate, ponder, excogitate, contemplate, muse, reflect, mull, mull over, ruminate, speculate} reflect deeply on a subject
"I mulled over the events of the afternoon"
"philosophers have speculated on the question of God for thousands of years"
"The scientist must stop to observe and start to excogitate"

{v: conform to} observe
"conform to the rules"
<-> violate

{v: contemplate} look at thoughtfully ; observe deep in thought
"contemplate one's navel"

{v: detect, observe, find, discover, notice} discover or determine the existence, presence, or fact of
"She detected high levels of lead in her drinking water"
"We found traces of lead in the paint"

{v: examine, see} observe, check out, and look over carefully or inspect
"The customs agent examined the baggage"
"I must see your passport before you can enter the country"

{v: mourn} observe the customs of mourning after the death of a loved one

{v: note, observe, mention, remark} make mention of
"She observed that his presentation took up too much time"
"They noted that it was a fine day to go sailing"

{v: note, take note, observe} observe with care or pay close attention to
"Take note of this chemical reaction"

{v: observe, celebrate, keep} celebrate, as of holidays or rites
"Keep the commandments"
"celebrate Christmas"
"Observe Yom Kippur"

{v: observe, keep, maintain} observe correctly or closely
"The pianist kept time with the metronome"
"keep count"
"I cannot keep track of all my employees"

{v: observe, keep} conform one's action or practice to
"keep appointments"
"she never keeps her promises"
"We kept to the original conditions of the contract"

{v: observe} watch attentively
"Please observe the reaction of these two chemicals"

{v: plant} place something or someone in a certain position in order to secretly observe or deceive
"Plant a spy in Moscow"
"plant bugs in the dissident's apartment"

{v: respect, honor, honour, abide by, observe} show respect towards
"honor your parents!"
<-> disrespect

{v: ring, band} attach a ring to the foot of, in order to identify
"ring birds"
"band the geese to observe their migratory patterns"

{v: see} observe as if with an eye
"The camera saw the burglary and recorded it"

{v: solemnize, solemnise} observe or perform with dignity or gravity
"The King solemnized this day of morning"

{v: spy, stag, snoop, sleuth} watch, observe, or inquire secretly

{v: stargaze} observe the stars

{v: take notice} observe with special attention
"Take notice of the great architecture"

{v: track} observe or plot the moving path of something
"track a missile"

{v: watch, look on} observe with attention
"They watched as the murderer was executed"

{v: watch, observe, follow, watch over, keep an eye on} follow with the eyes or the mind
"Keep an eye on the baby, please!"
"The world is watching Sarajevo"
"She followed the men with the binoculars"

{v: watch} observe or determine by looking
"Watch how the dog chases the cats away"

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