- observance, as of laws, customs, etc.
- the act, practice, or power of noticing
- something noticed
- the fact of being seen or noticed: seeking to avoid observation
- the act or practice of noting and recording facts and events, as for some scientific study
- the data so noted and recorded
- a comment or remark based on something observed
- the act of determining the altitude of the sun, a star, etc., in order to find a ship's position at sea
- the result obtained
Origin of observation
Middle English observacioun from Classical Latin observatio, in LL(Ec), reverence, outward display for observing