Meaning of datum
Pronunciation: (dā'tum, dat'um, dä'tum), [key]
— pl. da•ta da•tums
- a single piece of information, as a fact, statistic, or code; an item of data.
- any fact assumed to be a matter of direct observation.
- any proposition assumed or given, from which conclusions may be drawn.
- Also calledthe object of knowledge as presented to the mind. Cf. ideatum.
- any level surface, line, or point used as a reference in measuring elevations.
- a basis for horizontal control surveys, consisting of the longitude and latitude of a certain point, the azimuth of a certain line from this point, and two constants used in defining the terrestrial spheroid.
- datum (Thesaurus)