n. | 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. | |||
2. | a single piece of information; a fact; especially a piece of information obtained by observation or experiment; - used mostly in the plural. | ||||
3. | (Math.) The quantities or relations which are assumed to be given in any problem. | ||||
4. | (Surveying) a point, line, or level surface used as a reference in measuring elevations.
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Noun | 1. | datum - an item of factual information derived from measurement or research Synonyms: data point |