datum
noun pl. 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
See datum in American Heritage Dictionary 4
(dāˈtəm, dătˈəm, däˈtəm)
noun- pl. da·ta (-tə) 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.
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