the branch of biology concerned with the effects of radiation on living organisms
inflammation of the skin caused by sunlight or other radiation. noun dermatitis from exposure to radiation, esp ultraviolet light or X-rays actinodermatitis ac·ti·no·der·ma·ti·tis (āk’tə-nō-dûr’mə-tī’tĭs) n. Inflammation of the skin produced by exposure to sunlight. Adverse reaction of skin to radiation therapy.
(of a leaf) palmately veined.
the record produced by the action of an actinograph.
a recording actinometer.