(used with a plural verb) individual facts, statistics, or items of information: These data represent the results of our analyses. Data are entered by terminal for immediate processing by the computer.
(used with a singular verb) a body of facts; information: Additional data is available from the president of the firm.
a single piece of information, as a fact, statistic, or code; an item of data.
Philosophy. any fact assumed to be a matter of direct observation. any proposition assumed or given, from which conclusions may be drawn.