Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The act or an instance of emitting.
  • noun Something emitted.
  • noun A substance discharged into the air, especially by an internal combustion engine.

from The Century Dictionary.

  • noun The act of emitting, or of sending or throwing out; a putting forth or issuing: as, the emission of light from the sun or other luminous body; the emission of steam from a boiler; the emission of paper money.
  • noun That which is emitted, or sent or thrown out.
  • noun Specifically— In finance, an amount or quantity of any representative of value issued or put into circulation; an issue: as, the entire emission (of coin, bank-notes, or the like) has been called in or redeemed; the first, second and third emissions of United States notes issued during the civil war.
  • noun In physiology, a discharge, especially an involuntary discharge, of semen.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The act of sending or throwing out; the act of sending forth or putting into circulation; issue
  • noun That which is sent out, issued, or put in circulation at one time; issue.
  • noun (Physics) the theory of Newton, regarding light as consisting of emitted particles or corpuscles. See Corpuscular theory, under Corpuscular.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun That which is emitted or sent out.
  • noun The act of sending or throwing out; the act of sending forth or putting into circulation; issue.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the occurrence of a flow of water (as from a pipe)
  • noun the act of emitting; causing to flow forth
  • noun the release of electrons from parent atoms
  • noun any of several bodily processes by which substances go out of the body
  • noun a substance that is emitted or released

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin ēmissiō, ēmissiōn-, a sending out, from ēmissus, past participle of ēmittere, to send out; see emit.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

First attested in 1607. Borrowing from Latin ēmissiō ("sending forth") (also possibly influenced by Middle French emission from the same Latin source) from ēmittō ("send out"), from ex ("from, out of") + mittō ("send").

Examples

  • • This coherent emission of bioluminescence (having the characteristics of a \ "bio-laser\" emission) was demonstrated by using high technology and methodology, such as a photomultiplier, that is able to determine the Poissonian Photocount Statistics of a \ "biophoton emission\" and the hyperbolic-like relaxation of \ "delayed luminescence\" by analyzing the \ "biophoton emission\" and the

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