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The meaning of OBSERVATION is an act or instance of observing a custom, rule, or law. How to use observation in a sentence. In living organisms, observation typically occurs through the senses. In science, it often extends beyond unaided perception, involving the use of scientific instruments to detect, measure, and record data. OBSERVATION definition: an act or instance of noticing or perceiving. See examples of observation used in a sentence. OBSERVATION meaning: 1. the act of observing something or someone: 2. the fact that you notice or see something: 3. a.. Learn more. Define observation. observation synonyms, observation pronunciation, observation translation, English dictionary definition of observation. n. 1. a. The act of observing: observations of a rare bird. b. The.

Observation is the act of closely watching or noticing something or someone, often with the intention of gathering information or learning about their behavior, characteristics, or surroundings. OBSERVATION meaning: 1 : a statement about something you have noticed a comment or remark; 2 : the act of careful watching and listening the activity of paying close attention to someone or. Definition of observation noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.