datum
One recorded measurement
A datum is a single piece of information or fact, the singular of data.
In technical and scientific contexts, it refers to one measurement or observation: Each datum was recorded by hand.
A datum also serves as a reference point for measurement or calculation—a baseline from which other values are determined: sea level as a datum for elevation.
Outside specialized fields, datum sounds formal or pedantic; data has largely taken over for both singular and plural.
Measuring and charting terrain
- cartographyCreating geographic representations
- latitudeGeographic or personal freedom
- longitudeEast-west angular distance
- geoidGravitational equipotential surface model
meridian · triangulation · GIS · topographic · map projection · elevation · coordinate system · WGS84
Facts supporting truth
- informationKnowledge about something
- detailSingle small element
- specificClearly defined, not vague
- itemSingle unit or article
point · element · observation · finding · statistic · figure · datapoint · record
Standard for comparison
- baselineStandard for comparison
- standardLevel of quality accepted
- reference pointStandard for comparison
- starting pointPlace of commencement
anchor · origin · zero point · fixed point · control · constant · sea level · epoch
surveying
Measuring and charting terrain
- cartographyCreating geographic representations
- latitudeGeographic or personal freedom
- longitudeEast-west angular distance
geoid · meridian · triangulation · GIS · topographic · map projection · elevation · coordinate system · WGS84 · geodesy
evidence
Facts supporting truth
- informationKnowledge about something
- detailSingle small element
- specificClearly defined, not vague
item · point · element · observation · finding · statistic · figure · datapoint · record · entry
benchmark
Standard for comparison
- baselineStandard for comparison
- standardLevel of quality accepted
- reference pointStandard for comparison
starting point · anchor · origin · zero point · fixed point · control · constant · sea level · epoch
datapoint
One measured value recorded
- unitIndividual part or measure
- singleOne in number
- individualOne separate human being
one · piece · bit · fragment · atomic · discrete · instance · element · entry · record
- hydrographyhydrography, bathymetry, nautical charts, soundings, nautical chart
- optical alignmentcollimator, boresight, laser level, theodolite, reticle
- factsfacts, fact, detail, details, truth
- map featurescompass, compass rose, legend, scale, scale bar
- Map Termslatitude, longitude, equator, meridian, prime meridian
- detailsdetail, particular, specific, fact, point
datumfalsehood
Deliberate untrue statement
error · misinformation · inaccuracy · misconception · fallacy
datumdata set
Organized information collection
dataset · aggregate · data · corpus · collection
datumconjecture
Guess from limited facts
speculation · hypothesis · opinion · guess · assumption
- up to dateCurrent with latest information
- due dateWhen payment is required
- first dateInitial romantic meeting
- blind dateArranged meeting between strangers
- out of dateNo longer valid
- expiration dateFinal day of validity