datum

Definitions

  • WordNet 3.6
    • n datum an item of factual information derived from measurement or research
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Webster's Revised Unabridged Dictionary
    • Datum (Surveying) a point, line, or level surface used as a reference in measuring elevations.
    • Datum a single piece of information; a fact; especially a piece of information obtained by observation or experiment; -- used mostly in the plural.
    • Datum Something given or admitted; a fact or principle granted; that upon which an inference or an argument is based; -- used chiefly in the plural. "Any writer, therefore, who . . . furnishes us with data sufficient to determine the time in which he wrote."
    • Datum (Math) The quantities or relations which are assumed to be given in any problem.
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Century Dictionary and Cyclopedia
    • n datum A fact given; originally, one of the quantities stated, or one of the geometrical figures supposed constructed, in a mathematical problem, and from which the required magnitude or figure is to be determined. But Euclid uses the corresponding Greek term (δεδόμενον) in a second sense, as meaning any magnitude or figure which we know how to determine.
    • n datum A fact either indubitably known or treated as such for the purposes of a particular discussion; a premise.
    • n datum A position of reference, by which other positions are defined.
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Chambers's Twentieth Century Dictionary
    • Datum dā′tum (see Data)
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Etymology

Webster's Revised Unabridged Dictionary
L. See 2d Date

Usage

In literature:

What is the difference between an opinion or a doctrine taken (a) as a datum, and (b) as a value?
"Introduction to the Science of Sociology" by Robert E. Park
This discovery at that time he failed to make, owing to a wrong numerical datum.
"Pioneers of Science" by Oliver Lodge
But that the circle or that space itself exists, is not a necessary truth, but a datum of experience.
"Social Rights and Duties, Volume I (of 2)" by Sir Leslie Stephen
To establish this division, it is necessary to analyze shortly the datum point by which price is determined.
"Herbert Hoover" by Vernon Kellogg
The datum, I take for this proportion of twenty to one, is the difference between a capital and the interest at five per cent.
"The Writings Of Thomas Paine, Complete" by Thomas Paine
The datum, I take for this proportion of twenty to one, is the difference between a capital and the interest at five per cent.
"The Writings Of Thomas Paine, Volume III. 1791-1804" by Thomas Paine
Forty-six feet below the ground surface (-26 Cairo datum) was laid the concrete floor of the siphon.
"The Industrial Canal and Inner Harbor of New Orleans" by Thomas Ewing Dabney
This observed sequence is the fact from which she is said to infer, the datum of experience.
"Logic, Inductive and Deductive" by William Minto
Datum Avenioni, duodecimo kalendas martii, pontificatus nostri anno v. Dat.
"The Popes and Science" by James J. Walsh
On the metal print used for transmitting, and at the commencing edge a datum line is drawn across in insulating ink.
"Wireless Transmission of Photographs" by Marcus J. Martin
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In news:

Electrical Datum Plane — Defining the Limits.
GD&T Workshop: Datum Feature Selection and Use.
Items Tagged with ' Datum Feature Simulators'.
Articles Tagged with " Datum Feature Simulators".
Articles Tagged with " Datum Features".
We have already combined operations at Datum 's original location, near Grand Central Station.
Integreon Managed Solutions, Inc, a global leader in diversified knowledge process outsourcing, has announced that it has acquired Datum Legal, Inc, a leading litigation support and electronic data discovery (EDD) company in New York City.
Integreon Managed Solutions, Inc, a global leader in diversifiedknowledge process outsourcing has announced that it has acquired Datum Legal, Inc,a leading litigation support and electronic data discovery (EDD) company in New York City.
The parameters measured on roundness gages have datums that are self-referenced.
Self-referenced measurements do not require any datum to be established on the part independent from the feature being checked.
Items Tagged with 'the Datum reference frame '.
Articles Tagged with "the Datum reference frame ".
The US Coast Guard issued a rule updating the listed coordinates of boundaries of the Hampton Roads anchorages to utilize the North American Datum 1983 (NAD 83), rather than the older North American Datum 1927 (NAD 27).
Datum Point Tool, Inc now offers the Tight-Fit line, a customized series of tools that allows the user to corner round areas such as 90-degree inside corners.
I enjoyed reading Nigel Calder's recent article on chart datums ("The Roots of Chart Accuracy," Issue No 87).
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In science:

The uniqueness of the solution for a fixed initial datum.
Applications of the theory of evolution equations to general relativity
It is known that there is a smooth solution of the ADM equations corresponding to any smooth initial datum satisfying the constraints and that the solutions depend continuously on the initial data.
Applications of the theory of evolution equations to general relativity
Each term of the complex is a vector bundle on Pd , explicitly described in terms of the combinatorial datum λ.
On equations defining coincident root loci
We will denote the tra jectory with initial datum x(0) as γ ⊂ R4n .
Hyperhamiltonian dynamics
In such a sense, the pair (|Tl=a | → M , Div(T )), or shortly, (T , Div(T )), encodes the datum of the triangulation |Tl=a | → M and of a corresponding set of curvature assignments {q(k)} on the vertices {σ0 (i)}N0 (T ) .
The modular geometry of Random Regge Triangulations
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