a variety of amphibole, occurring in greenish bladed crystals or in masses.
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 of 4: A-D) Various
It is entirely composed of a slaty rock, traversed by numerous veins of actinolite.
A Guide to the Mount’s Bay and the Land’s End John Ayrton Paris
actinolite is a green silicate of lime, magnesia, and iron 322 especially common in certain metamorphic rocks.
Geology William J. Miller
a green mineral of the amphibole group consisting of calcium magnesium iron silicate. Formula: Ca2(Mg,Fe)5Si8O22(OH)2
A greenish variety of amphibole. Actinolite is a monoclinic mineral, and occurs in long, slender, green needlelike crystals, or in fibrous, radiated forms in metamorphic rocks. Chemical formula: Ca2(Mg,Fe)5Si8O22OH2.
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 […]
noun another name for antimere
Biology. having radial symmetry. Botany. (of certain flowers, as the buttercup) divisible vertically into similar halves by each of a number of planes passing through the axis. adjective (botany) (esp of a flower) having radial symmetry, as buttercups See also zygomorphic actinomorphic (āk’tə-nō-môr’fĭk) Relating to a flower that can be divided into equal halves along […]