Meaning of DATUM in English

DATUM

/day"teuhm, dat"euhm, dah"teuhm/ , n. , pl. data /day"teuh, dat"euh, dah"teuh/ for 1-3, datums for 4, 5.

1. a single piece of information, as a fact, statistic, or code; an item of data.

2. Philos.

a. any fact assumed to be a matter of direct observation.

b. any proposition assumed or given, from which conclusions may be drawn.

3. Also called sense datum . Epistemology. the object of knowledge as presented to the mind. Cf. ideatum .

4. Survey. , Civ. Eng. any level surface, line, or point used as a reference in measuring elevations.

5. Survey. 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.

[ 1640-50; dare to give ]

Usage . See data .

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .