- the measurement of the altitude or azimuth of a heavenly body for navigational purposes.
- the information obtained by such a measurement.
- observation car,
- observation post,
Origin of observation
Examples from the Web for observation
Barack Obama was not the first Liberal to make this observation.
To make matters worse, it is my observation that these policies do not hit all parents equally.
The only gauge of normality that young people have is their observation of each other.
He was giving a little history lesson about the 18th century and making an observation, a promise—or a threat—for the future.
All this observation and self-observation possibly says something very depressing about how insular and self-obsessing we are.Watching Us, Watching Them: On ‘The People’s Couch’|Tim Teeman|March 20, 2014|DAILY BEAST
These circumstances had given extensive notoriety to her name, and drawn largely upon her the observation of both friend and foe.Horse-Shoe Robinson|John Pendleton Kennedy
Intently from his screened post of observation, he watched the gun barrel.Tom Fairfield in Camp|Allen Chapman
That artful girl soon discovered what had escaped her mistress's observation.A Terrible Temptation|Charles Reade
"You may some day," he goes on, without heeding her observation.Gwen Wynn|Mayne Reid
In incidents taken from common life he showed himself full of observation, and possessed of some humour.The Old Masters and Their Pictures|Sarah Tytler
- a sight taken with an instrument to determine the position of an observer relative to that of a given heavenly body
- the data so taken
late 14c., "performance of a religious rite," from Latin observationem (nominative observatio) "a watching over, observance, investigation," noun of action from past participle stem of observare (see observe). Sense of "act or fact of paying attention" is from 1550s. Meaning "a remark in reference to something observed" first recorded 1590s.