datum(n = noun.cognition) data point - an item of factual information derived from measurement or research;
is a kind of information
has particulars: indication, meter reading, reading, statistic
datum, n. (pl. data: see DATA as main entry).
1 a piece of information.
2 a thing known or granted; an assumption or premiss from which inferences may be drawn (see sense-datum).
3 a fixed starting-point of a scale etc. (datum-line).
Etymology:
L, = thing given, neut. past part. of dare give