noun. A fact or proposition used to draw a conclusion or make a decision.

noun. A point, line, or surface used as a reference, as in surveying, mapping, or geology.

noun. A fact given; originally, one of the quantities stated, or one of the geometrical figures supposed constructed, in a mathematical problem, and from which the required magnitude or figure is to be determined.

noun. A fact either indubitably known or treated as such for the purposes of a particular discussion; a premise.

noun. A position of reference, by which other positions are defined.

noun. Something given or admitted; a fact or principle granted; that upon which an inference or an argument is based; -- used chiefly in the plural.

noun. a single piece of information; a fact; especially a piece of information obtained by observation or experiment; -- used mostly in the plural.

noun. The quantities or relations which are assumed to be given in any problem.

noun. a point, line, or level surface used as a reference in measuring elevations.

noun. the horizontal or base line, from which the heights of points are reckoned or measured, as in the plan of a railway, etc.

noun. 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.

noun. (philosophy) A fact known from direct observation.

noun. (philosophy) A premise from which conclusions are drawn.

noun. (cartography, engineering) A fixed reference point.

noun. an item of factual information derived from measurement or research

"Mr. Smith's method of proving that every circle is 3-1/8 diameters is to assume that it is so, -- "if you dislike the term datum, then, by hypothesis, let 8 circumferences be exactly equal to 25 diameters," -- and then to show that every other supposition is thereby made absurd."

data of consciousness  datum-line  ordnance datum  

data  dice  die  information  

datum line  datum plane  datum point  

Chatham  Tatum  atom  stratum  ultimatum  

antea  certi  datur  efficeret  erratum  

absolute fact  accepted fact  account  acquaintance  actual fact  

data