Of the lowest among these orders, the actinoid Polyps, our Actinia or sea-anemone is a good example.
Seaside Studies in Natural History Elizabeth Cabot Cary Agassiz
having a radiate form, as a sea anemone or starfish
a variety of amphibole, occurring in greenish bladed crystals or in masses. Historical Examples The actinolite slate is dark green, and formed by an almost insensible gradation from the mica slate. In the Arctic Seas Francis Leopold McClintock Byssolite, bis′o-līt, n. an olive-green variety of actinolite, in long crystals. Chambers’s Twentieth Century Dictionary (part 1 […]
the science that deals with actinism.
actinomadura Actinomadura Ac·ti·no·mad·u·ra (āk’tə-nō-māj’ə-rə) n. A genus of aerobic, gram-positive, non-acid-fast fungi forming filaments that fragment into spores.
a device for measuring intensity of radiation, especially that of the sun. Historical Examples It is a good plan to employ an actinometer to judge the correct exposure. Photographic Amusements, Ninth Edition Walter E. Woodbury and Frank R. Fraprie A Johnson’s actinometer is very useful to time the exposure. Photogravure Henry R. Blaney You may […]