datum
n.
fact, factual information; detail
Datum
This article describes a concept from
surveying and
geodesy. Datum is also the last known position of a
submarine in
ASW, the singular form of
data, and a city in ancient Macedonia, probably on the site of the modern
Kavala. A datum (plural datums or data) is a reference from which measurements are made. In
surveying and
geodesy, a datum is a set of reference points on the earth's surface against which position measurements are made, and (often) an associated model of the shape of the earth (
ellipsoid) to define a
geographic coordinate system. Horizontal datums are used for describing a point on the
earth's surface, in
latitude and
longitude or another coordinate system. Vertical datums measure elevations or depths. In
engineering and
drafting, a datum is a reference point, surface, or axis on an object against which measurements are made.
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datum
Noun
1. an item of factual information derived from measurement or research
(synonym) data point
(hypernym) information
(hyponym) reading, meter reading, indication
Datum (das)
n.
date, day month and year according to the calendar; datum, fact, detail
datum (de)
n.
date, day month and year according to the calendar
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