what is datum definition
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datum datum. ( 1 plural: data) A measurement of something on a scale understood by both the recorder (a person or device) and the reader (another person or device). The scale is arbitrarily defined, such as from 1 to 10 by ones, 1 to 100 by 0.1, or simply true or false, on or off, yes, no, or maybe, etc.
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Data The first English use of the word data is from the 1640s. Using the word data to mean transmittable and storable computer information was first done in 1946. The expression data processing was first used in 1954. The Latin word data is the plural of datum, (thing) given, neuter past participle of dare to give. Data may be used as a plural noun in this sense, with some writers in the 2010s using datum in the singular and data for plural.
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data It is almost always treated as a plural in scientific and academic writing. In other types of writing it is either singular or plural. The singular datum meaning “a piece of information” is now rare in all types of writing.
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Vertical Datums More broadly, a vertical datum is the entire system of the zero elevation surface and methods of determining heights relative to that surface. Over the years, many different types of vertical datums have been used. The most predominant types today are tidal datums and geodetic datums.
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- Based on the definition of datums presented in Workshop No. 5, datum A is the tangent plane on datum feature simulator A, datum B is the axis of datum feature simulator B, and datum C is the midplane of datum feature simulator C, as illustrated in figure 3. Figure 3.
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data 1 Facts that can be analyzed or used in an effort to gain knowledge or make decisions; information. 2  Statistics or other information represented in a form suitable for processing by computer.  Plural of datum.
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data point A data point is a discrete unit of information. In a general sense, any single fact is a data point. In a statistical or analytical context, a data point is usually derived from a measurement or research and can be represented numerically and/or graphically. The term data point is roughly equivalent to datum, the singular form of data.
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- Many careful writers insist that the words data and media are Latin plurals and must, therefore, be used as plural words. The singular Latin forms of these words, however, are seldom used: datum as a single bit of information or medium as a single means of communication.
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datum Datum definition, a single piece of information, as a fact, statistic, or code; an item of data. See more.
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Geodetic Datums By Amanda Briney, Geography Intern. A geodetic datum is the tool used to define the shape and size of the earth, as well as the reference point for the various coordinate systems used in mapping the earth. Throughout time, hundreds of different datums have been used-each one changing with the earth views of the times.
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- The Measurement Incorporated Secure Testing system (MIST) is a secure test delivery system. It has two interfaces: one for students and one for test. administrators. It uses a small application and an active internet connection to the server at Measurement Incorporated to securely deliver test content to. students.
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Stratum In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers.The stratum is the fundamental unit in a stratigraphic column and forms the basis of the study of stratigraphy.n geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers.
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GD&T â Datum â A Better Insight â ASME Y14.5 Datum Facts. Datums are theoretically perfect points, lines, and planes. Datums exist within a structure of three mutually perpendicular intersecting planes known as a datum reference frame. A part is oriented and immobilized relative to the three mutually perpendicular planes of the datum reference frame in a selected order of precedence.
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Definitions &Translations In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil with internally consistent characteristics that distinguish it from other layers. The stratum is the fundamental unit in a stratigraphic column and forms the basis of the study of stratigraphy.
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- North American Datum. Meades Ranch Triangulation Station, fundamental station for the North American Datum of 1927. The North American Datum (NAD) is the datum now used to define the geodetic network in North America. A datum is a formal description of the shape of the Earth along with an anchor point for the coordinate system.
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23 Words Teenagers Love To Use And What They Really Mean Definition: Dat is basically the teenage version of that except it is hip and fresh like the teens that use it! Used in a sentence: Dat boy is so cute in his prom tux. I want a piece of dat.
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Definitions &Translations GCIDE(0.00 / 0 votes)Rate this definition: 1  Datum(n.) a single piece of information; a fact; especially a piece of information obtained by observation or experiment; -- used mostly in the plural. 2  Datum(n.) (Surveying) a point, line, or level surface used as a reference in measuring elevations. RHUD.
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- In general, a datum is a base elevation used as a reference from which to reckon heights or depths. A tidal datum is a standard elevation defined by a certain phase of the tide.
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- Datum is, from its Latin origin, a singular form of data, and may refer to a single item of data. 1 Singular data point. 1  Geodetic datum, a standard position or level that measurements are taken from in geographic surveying. 2  Datum reference, in carpentry, metalworking, needlework, geometric dimensioning and tolerancing. 3  Chart datum, level of water depth on a nautical chart. Datum or datum point, a (possibly arbitrary) reference baseline or point from which scientific measurements are made (from a Latin meaning of datum as a given, i.e. an accepted fact)
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"Geological Terms Beginning With ""D""" Sea level is a datum for elevation measurements. Datums can also be arbitrary such as the starting point for stream stage measurements or based upon a physical feature such as the base of a rock unit. Shown in the photo is a bench mark. A location of accurately measured elevation, latituded and longitude that is labeled with a carefully placed marker.
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- Note: Although originally a plural (the rarely used singular is datum) and used with a plural verb, data is now often used as an uncount noun with a singular verb. (Definition of “data” from the Cambridge Academic Content Dictionary © Cambridge University Press)
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- A geodetic datum is the tool used to define the shape and size of the earth, as well as the reference point for the various coordinate systems used in mapping the earth.Throughout time, hundreds of different datums have been used-each one changing with the earth views of the times.ithin the World Geodetic System (WGS), there are several different datums that have been in use throughout the years. These are WGS 84, 72, 70, and 60. The WGS 84 is currently the one in use for this system and is valid until 2010. In addition, it is one of the most widely used datums around the world.
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- Definition of nexus - a connection or series of connections linking two or more things, a central or focal point Definition of nexus - a connection or series of connections linking two or more things, a central or focal point
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Datum (geodesy) A reference datum (mathematical model) is a known and constant surface which is used to describe the location of unknown points on the earth. Since reference datums can have different radii and different center points, a specific point on the earth can have substantially different coordinates depending on the datum used to make the measurement.
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- A geodetic datum is the tool used to define the shape and size of the earth, as well as the reference point for the various coordinate systems used in mapping the earth. Throughout time, hundreds of different datums have been used-each one changing with the earth views of the times.
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- The definition of a datum is a fact used to make a conclusion or a point of reference in geography or geology. 1  An example of a datum is a new scientific discovery used to reach a conclusion about the common cold.