The meaning of OBSERVATION is an act or instance of observing a custom, rule, or law. How to use observation in a sentence.

OBSERVATION definition: 1. the act of observing something or someone: 2. the fact that you notice or see something: 3. a…. Learn more.

OBSERVATION definition: an act or instance of noticing or perceiving. See examples of observation used in a sentence.

Definition of observation noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and 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 …

What does the noun observation mean? There are 14 meanings listed in OED's entry for the noun observation, five of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and …

Dec 14, 2025 · Noun observation (countable and uncountable, plural observations) The act of observing, and the fact of being observed (see observance)