Main Entry: da·tum

Pronunciation: \ˈdā-təm, ˈda-, ˈdä-\

Function: noun

Etymology: Latin, from neuter of datus

Date: 1646

1 plural da·ta \-ə\ : something given or admitted especially as a basis for reasoning or inference
2 plural datums : something used as a basis for calculating or measuring

usage see data