adjective
definition
Of or relating to actinism.
definition
Composed of actin.
definition
Related to or caused by light or radiation. In medicine, actinic keratoses usually occur in sundamaged skin and exhibit hyperkeratosis.
Examples of actinic in a Sentence
A mixture of carbon bisulphide vapour and nitric oxide burns with a very intense blue-coloured flame, which is very rich in the violet or actinic rays.
Photography is based on chemical action induced by luminous rays; apart from this practical application there are many other cases in which actinic rays occasion chemical actions; these are treated in the article Photochemistry.
This artifice is specially adopted in objectives for astronomical photography ("pure actinic achromatism").
On this account the lines D and G' are united for ordinary photographic objectives; the optical as well as the actinic image is chromatically inferior, but both lie in the same place; and consequently the best correction lies in F (this is known as the " actinic correction " or " freedom from chemical focus ").
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Actinic CEO Chris Barling comments, " Companies that do adopt epos soon find that they could not manage without it.
For each individual actinic keratosis is present, most patients have 10- 20 others which may be less obvious.
The word actinometer is now usually applied to instruments for measuring the actinic or chemical effect of luminous rays; their action generally depends upon photochemical changes.
The need is urgent of fixing a scale, and defining standards of actinic brightness; but it has not yet been successfully met.