- Data
- Datum Da"tum, n.; pl. {Data}. [L. See 2d {Date}.]
1. Something given or admitted; a fact or principle granted;
that upon which an inference or an argument is based; --
used chiefly in the plural.
[1913 Webster]
Any writer, therefore, who . . . furnishes us with data sufficient to determine the time in which he wrote. --Priestley. [1913 Webster]
2. a single piece of information; a fact; especially a piece of information obtained by observation or experiment; -- used mostly in the plural. [PJC]
3. pl. (Math.) The quantities or relations which are assumed to be given in any problem. [1913 Webster]
4. (Surveying) a point, line, or level surface used as a reference in measuring elevations. --RHUD [PJC]
{Datum line} (Surv.), the horizontal or base line, from which the heights of points are reckoned or measured, as in the plan of a railway, etc. [1913 Webster] ||
The Collaborative International Dictionary of English. 2000.