Definition of "observation" in English

noun

1. The act of observing, and the fact of being observed (see observance)

2. The act of noting and recording some event; or the record of such noting.

3. A remark or comment.

4. A judgement based on observing.

5. Performance of what is prescribed; adherence in practice; observance.

6. A regime under which a subject is routinely observed.

7. (stochastics) A realization of a random variable.