Definition of actinic in English:

actinic

Line breaks: ac|tin¦ic
Pronunciation: /akˈtɪnɪk
 
/

adjective

technical
  • (Of light or lighting) able to cause photochemical reactions, as in photography, through having a significant short wavelength or ultraviolet component.
    More example sentences
    • This approach can be very cost-effective, since the cost of non-LED based actinic illumination is significantly lower than LED-based illumination.
    • These states were detected both by short actinic flashes and by the switching of the actinic illumination level between different stationary state values.
    • Leaves were then illuminated with actinic light and saturating flashes of 0.7 s duration were applied every 1.5 min.

Derivatives

actinism

noun
More example sentences
  • Optical radiation may cause chemical changes in living or non-living materials: this property is called actinism and radiation capable of causing such changes is referred to as actinic radiation.
  • The author here suggests the introduction of a useful word, radiance, to express the light, radiant heat, and actinism of the sun, which are evidently modifications of the same form of energy.
  • The germination of seeds in the spring is dependent upon the variations in the amount of actinism or chemical influence of light and heat.

Origin

mid 19th century: from Greek aktis, aktin- 'ray' + -ic.

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