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Pronunciation:  `âbzur'veyshun

WordNet Dictionary
  1. [n]  the act of observing; taking a patient look
  2. [n]  the act of making and recording a measurement
  3. [n]  the act of noticing or paying attention; "he escaped the notice of the police"
  4. [n]  facts learned by observing; "he reported his observations to the mayor"
  5. [n]  a remark expressing careful consideration

OBSERVATION is a 11 letter word that starts with O.


 Synonyms: notice, observance, observance, reflection, reflexion, watching
 See Also: attending, attention, comment, fact, look, looking, looking at, measure, measurement, measuring, mensuration, mind, monitoring, Parkinson's law, radio observation, remark, remark, scientific fact, sighting, stargazing



Webster's 1913 Dictionary
\Ob`ser*va"tion\, n. [L. observatio: cf.F.
1. The act or the faculty of observing or taking notice; the
   act of seeing, or of fixing the mind upon, anything.

         My observation, which very seldom lies. --Shak.

2. The result of an act, or of acts, of observing; view;
   reflection; conclusion; judgment.

         In matters of human prudence, we shall find the
         greatest advantage in making wise observations on
         our conduct.                          --I. Watts.

3. Hence: An expression of an opinion or judgment upon what
   one has observed; a remark. ``That's a foolish
   observation.'' --Shak.

         To observations which ourselves we make We grow more
         partial for the observer's sake.      --Pope.

4. Performance of what is prescribed; adherence in practice;
   observance. [Obs.]

         We are to procure dispensation or leave to omit the
         observation of it in such circumstances. --Jer.

5. (Science)
   (a) The act of recognizing and noting some fact or
       occurrence in nature, as an aurora, a corona, or the
       structure of an animal.
   (b) Specifically, the act of measuring, with suitable
       instruments, some magnitude, as the time of an
       occultation, with a clock; the right ascension of a
       star, with a transit instrument and clock; the sun's
       altitude, or the distance of the moon from a star,
       with a sextant; the temperature, with a thermometer,
   (c) The information so acquired.

Note: When a phenomenon is scrutinized as it occurs in
      nature, the act is termed an observation. When the
      conditions under which the phenomenon occurs are
      artificial, or arranged beforehand by the observer, the
      process is called an experiment. Experiment includes

{To take an observation} (Naut.), to ascertain the altitude
   of a heavenly body, with a view to fixing a vessel's
   position at sea.

Syn: Observance; notice; attention; remark; comment; note.
     See {Observance}.

Medical Dictionary
 Definition: Closely monitoring a patient's condition but withholding treatment until symptoms appear or change. Also called watchful waiting.
Thesaurus Terms
 Related Terms: accordance, acquittal, acquittance, address, adherence, advertence, advertency, affirmation, alertness, allegation, announcement, answer, apostrophe, apprehension, assertion, assiduity, assiduousness, assumption, attention, attention span, attentiveness, attitude, averment, awareness, bugging, care, carrying out, climate of opinion, cloak-and-dagger work, cognizance, comment, commentary, common belief, community sentiment, compliance, conceit, concentration, concept, conception, conclusion, conformance, conformity, consciousness, consensus gentium, consideration, counterespionage, counterintelligence, crack, criticism, declaration, dictum, diligence, discharge, discovery, ear, earnestness, electronic surveillance, espial, espionage, estimate, estimation, ethos, examination, exclamation, execution, expression, eye, fancy, feeling, following, fulfillment, general belief, greeting, heed, heedfulness, heeding, idea, image, imago, impression, inspection, intellectual object, intelligence, intelligence work, intentiveness, intentness, interjection, judgment, keeping, lights, looking, lookout, mark, memory-trace, mental image, mental impression, mention, military intelligence, mind, mindfulness, mystique, note, notice, notion, obiter dictum, observance, opinion, Parthian shot, perception, performance, personal judgment, phrase, point of view, popular belief, position, posture, practice, presumption, prevailing belief, proclamation, pronouncement, public belief, public opinion, question, reaction, recept, reflection, regard, regardfulness, remark, representation, respect, satisfaction, say, saying, scrutiny, secret police, secret service, sentence, sentiment, shadowing, sight, spying, stakeout, stance, statement, subjoinder, supposition, surveillance, survey, tailing, theory, thinking, thought, trailing, utterance, view, viewing, watch, watching, way of thinking, wiretap, wiretapping, witnessing, word