- (n.) The information so acquired.
- (n.) The result of an act or of acts, of observing; view; reflection; conclusion; judgment.
- (n.) The act of recognizing and noting some fact or occurrence in nature, as an aurora, a corona or the structure of an animal.
- 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, etc.
- (n.) Hence: An expression of an opinion or judgment upon what one has observed; a remark.
- (n.) The act or the faculty of observing or taking notice; the act of seeing or of fixing the mind upon, anything.
- (n.) Performance of what is prescribed; adherence in practice; observance.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). observation. Retrieved September 20, 2026, from http://smartdefine.org/observation/definitions/2038048 |
| Chicago | Webster's. 2011. "observation" http://smartdefine.org/observation/definitions/2038048 (accessed September 20, 2026). |
| Harvard | Webster's 2011, observation, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/observation/definitions/2038048>. |
| MLA | Webster's. "observation" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/observation/definitions/2038048> |