Definition of Point source

1. Noun. A concentrated source (especially of radiation or pollution) that is spatially constricted.

Generic synonyms: Beginning, Origin, Root, Rootage, Source

Definition of Point source

1. Noun. (science) a source of pollution, radiation, waves, fluid or other substance that has one specific location (and negligible physical extent, distinguishing a ''point source'' from other source geometries). In simulations they can often be approximated using mathematical point sources. ¹

2. Noun. (mathematics) the abstract concept of a singularity emitting a flux or flow. A source with infinitesimal dimensions in space. ¹

¹ Source:

Medical Definition of Point source

1. In photometry, a very small source of light which is regarded as a geometrical point from which light emanates in straight lines in all directions. (05 Mar 2000)

Lexicographical Neighbors of Point Source

point of order
point of ossification
point of periapsis
point of pride
point of proximal contact
point of purchase
point of reference
point of regard
point of sail
point of sale
point of view
point out
point projection
point release
point releases
point source (current term)
point sources
point system
point system test types
point taken
point tenderness
point the bone
point the finger
point the finger at
point the way
point up
point woman

Literary usage of Point source

Below you will find example usage of this term as found in modern and/or classical literature:

1. Societal Value of Geologic Maps by Richard L. Bernknopf (1994)
"Regional Ground-Water Quality at Risk from Point-Source and Nonpoint-Source Contamination Issue: How does geologic map information help identify the ..."

2. The Principles and Methods of Geometrical Optics: Especially as Applied to by James Powell Cocke Southall (1910)
"Brightness of a Point-Source. If the luminous object is so small or so far away ... when the eye is directed towards the point- source), we obtain: B = C*^. ..."

3. General Physics and Its Application to Industry and Everyday Life by Ervin Sidney Ferry (1921)
"From this equation we see that at unit distance from a point source of unit intensity, the illumination is unity. Consequently, the lumen per square meter ..."

4. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, and General by Thomas Spencer Baynes (1888)
"I. Instantaneous simple point-source ; a quantity в of heat suddenly generated ... Continued point-source ; rate per unit of time, at time (, an arbitrary ..."

5. Evaluating Economic Instruments for Environmental Policy by Stephen Smith, Hans B. Vos (1997)
"Each point source has a single limit for the entire facility. ... The discharge allocations set in 1984 included point source growth margins to accommodate ..."

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