- The definition of a datum is a fact used to make a conclusion or a point of reference in geography or geology.
- An example of a datum is a new scientific discovery used to reach a conclusion about the common cold.
- An example of a datum is the assumed altitude of a specific piece of land used as the basis in calculating the altitude of the top of a mountain on the land.
nounpl. data or datums
- something known or assumed; information from which conclusions can be inferred
- a real or assumed thing, used as a basis for calculations or measurements, as a level (also ) from which elevations and depths are measured in surveying
Origin of datumClassical Latin what is given, neuter of datus: see date
- pl. da·ta A fact or proposition used to draw a conclusion or make a decision. See Usage Note at data.
- pl. da·tums A point, line, or surface used as a reference, as in surveying, mapping, or geology.
Origin of datumLatin, something given, from neuter past participle of dare, to give; see dō- in Indo-European roots.
(plural data or datums)
- (plural: data) A measurement of something on a scale understood by both the recorder (a person or device) and the reader (another person or device). The scale is arbitrarily defined, such as from 1 to 10 by ones, 1 to 100 by 0.1, or simply true or false, on or off, yes, no, or maybe, etc.
- (plural: data) (philosophy) A fact known from direct observation.
- (plural: data) (philosophy) A premise from which conclusions are drawn.
- (plural: datums) (cartography, engineering) A fixed reference point.
From Latin datum.
datum - Computer Definition
The singular form of data; for example, one datum. It is rarely used, and data, its plural form, is commonly used for both singular and plural.