Definitions

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

  • adjective Of, relating to, resulting from, or showing actinism.

from The Century Dictionary.

  • Pertaining to actinism; having the property of actinism.

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

  • adjective Of or pertaining to actinism.

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

  • adjective Of, or relating to actinism

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

  • adjective relating to or exhibiting actinism

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek ἀκτίς, ἀκτῖν- (actis, actin-, "ray") +‎ -ic

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Examples

  • Thus from the work of Hertz and his successors we know that light, and more particularly what we call actinic light, is an effective means of setting free electrons from certain substances.

    The Birth-Time of the World and Other Scientific Essays John Joly 1895

  • The analogy, though imperfect, is that some early skin cancers are called "actinic keratoses" and early cervical cancers are termed "dysplasias."

    News 2011

  • In addition to early squamous cell carcinomas — a cancer that's usually curable — he has been treated for half a dozen of these precancers, called actinic keratoses.

    Doctors can treat skin precancer before it turns deadly 2011

  • He sees many patients with a condition known as actinic keratosis—small, rough, raised areas on the skin that can develop into squamous cell carcinoma, a cancer that in turn can spread to internal organs and be life-threatening.

    Reckoning With the Sun Laura Landro 2011

  • In addition to early squamous cell carcinomas — a cancer that's usually curable — he has been treated for half a dozen of these precancers, called actinic keratoses.

    Doctors can treat skin precancer before it turns deadly 2011

  • Most important, retinoids decrease things called actinic keratoses that can become skin cancer.

    You Being Beautiful Michael F. Roizen 2008

  • Most important, retinoids decrease things called actinic keratoses that can become skin cancer.

    You Being Beautiful Michael F. Roizen 2008

  • Now, her husband has had four precancerous lesions, called actinic keratosis, taken off of his face.

    CNN Transcript Dec 19, 2006 2006

  • From the least to the most dangerous, they are: basal cell carcinoma (or basal cell carcinoma epithelioma) squamous cell carcinoma (the first stage of which is called actinic keratosis) melanoma

    Recently Uploaded Slideshows 2010

  • From the least to most dangerous, skin cancer refers to three different conditions: basal cell carcinoma, squamous cell carcinoma (the first stage of which is called actinic keratosis) and melanoma.

    Recently Uploaded Slideshows 2010

Comments

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  • I learned this word from the novels of Janny Wurts.

    December 2, 2006