Emission

//ˈɛmɪʃən// noun

noun ·Moderate ·College level

Definitions

Noun
  1. 1
    Something which is emitted or sent out; issue. countable, uncountable

    "the emission was mostly blood"

  2. 2
    A show; a program.

    "All too often, such shows result in destroying any idea that the topic just _could possibly_ be serious. I also discussed with gothic friends, telling they once were interviewed by people claiming to be creating an emission about gothics... just to discover later that the real topic was sects!"

  3. 3
    the act of emitting; causing to flow forth wordnet
  4. 4
    The act of emitting; the act of sending forth or putting into circulation. countable, uncountable

    "the emission of light from the sun"

  5. 5
    the occurrence of a flow of water (as from a pipe) wordnet
Show 3 more definitions
  1. 6
    any of several bodily processes by which substances go out of the body wordnet
  2. 7
    the release of electrons from parent atoms wordnet
  3. 8
    a substance that is emitted or released wordnet

Synonyms

All synonyms
dischargeissuanceblowoutdischargedisgorgementeffusion

Example

More examples

"Positron Emission Tomography uses a radioactive tracer to visualize metabolic activity within the human body."

Etymology

Etymology 1

First attested in 1607. From Middle French émission, from Latin ēmissiō (“sending forth”), from ēmittō (“send out”), from ex (“from, out of”) + mittō (“send”).

Etymology 2

Borrowed from French émission.

Related phrases

Lambert's emission lawacoustic emissionalpha emissionatomic emission spectroscopyemission allowanceemission lineemission nebulaemission spectrumemission theoryemissions testfield emissionfield emission display

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.