A a


    • US Pronunciation
    • US IPA
    • [ak-tuh-niz-uh m]
    • /ˈæk təˌnɪz əm/
    • US Pronunciation
    • US IPA
    • [ak-tuh-niz-uh m]
    • /ˈæk təˌnɪz əm/

Definitions of actinism word

  • noun actinism that property of ultraviolet light, X-rays, or other radiations, by which chemical changes are produced 3
  • noun actinism the property of radiation by which chemical effects are produced. 1
  • noun actinism (chemistry, physics) That property of electromagnetic radiation that leads to the production of photochemical effects. 1

Information block about the term

Origin of actinism

First appearance:

before 1835
One of the 34% newest English words
First recorded in 1835-45; actin- + -ism

Historical Comparancy

Parts of speech for Actinism


actinism popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 61% of English native speakers know the meaning and use word.
This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

actinism usage trend in Literature

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Synonyms for actinism

noun actinism

  • cathode rays — a stream of electrons emitted from the surface of a cathode in a valve
  • fluoroscope — a tube or box fitted with a screen coated with a fluorescent substance, used for viewing objects, especially deep body structures, by means of x-ray or other radiation.
  • radioactivity — the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element.
  • radiograph — Also called shadowgraph. a photographic image produced by the action of x-rays or nuclear radiation.
  • refractometry — an instrument for determining the refractive index of a substance.

See also

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