Meaning of datum | Babel Free

Definitions

1. Something known or assumed as fact, and is made the basis of reasoning or inference which an intellectual system of any sort (such as knowledge or theoretical framework) is constructed.
2. Singular of data: A single recorded phenomenon, especially obtained by scientific work.
   form-of, singular
3. pl. da·ta (-tə) A fact or proposition used to draw a conclusion or make a decision. See Usage Note at data.
4. A point, line, plane, or surface with reference to which positions (such as elevations) are measured or indicated. (Examples include a permanent benchmark in leveling or mean sea level in a topographical survey).
5. pl. da·tums A point, line, or surface used as a reference, as in surveying, mapping, or geology.
6. A floating reference point, or SLDMB, used to evaluate surface currents in a body of water, and often employed by coastal search and rescue.
7. (Communications & Information) a single piece of information; fact
8. (Logic) a proposition taken for granted, often in order to construct some theoretical framework upon it; a given. See also sense datum
9. a single piece of information, as a fact, statistic, or code; an item of data.
10. any proposition assumed or given, from which conclusions may be drawn.
11. n pl <data> (rare) → Faktum nt, → Datum nt
    n pl

Equivalents

Examples

“a datum of experience⟳”

“given this datum, it follows that”

“Holonym: data set⟳”

“A geodetic datum is sometimes also called a benchmark.”

“GD&T tells us that the center of a bolt circle is in fact defined by the locations of the holes themselves, as each is a datum.”

“In a strict sense⟳, a tidal datum can be understood as the reference plane (or surface) to which the height of a predicted tide is referred.[…]Sounding and chart datums are low water datums, that is, they refer⟳ to the level of the water surface at low tide. Nonetheless, there are also datums based on high water levels.[…]These two different datums may be included in the broader category of vertical datums, which comprises any plane or surface used as a reference to measure⟳ vertical distances (such as depths, drying features, heights on shore, etc.).”

“Datums are another important map aspect related to projection. A datum provides a base⟳ reference for measuring locations on Earth's surface.”

“For horizontal measurements [on the Earth], we fix⟳ a mathematical body of Earth in space using a Cartesian coordinate system. After that, a separate⟳ coordinate system is created over the surface of this body to generate⟳ horizontal coordinates. A mathematical earth body fixed in space makes up the horizontal datum.”

CEFR level