- 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 self-observation
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
They are not quite so new to the world, to experimental labor in the business of tuition, or to self-observation.An Essay on the Evils of Popular Ignorance|John Foster
But the very keenness of his self-observation gradually brings him healing: a mastery of the body by the brain.Contemporary Belgian Poetry|Various
Especially did I love to indulge my old habit of self-observation and introspection.Autobiography of Friedrich Froebel|Friedrich Froebel
- 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.