单词 | quadrivoltine |
释义 | quadrivoltinen.adj. A. n. A silkworm of a variety producing four broods or generations in a year. rare. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > Heterocera > [noun] > family Bombycidae > genus Bombyx > silk moth > caterpillar of bombyx mori or silkworm > characterized by number of broods bivoltine1872 univoltine1872 quadrivoltine1888 trivoltin1888 polyvoltine1890 1888 E. A. Butler Silkworms 69 Most of the other species produce two, three, four, six, or even eight broods per annum, and in the commercial world are..distinguished as ‘bivoltins’, ‘trivoltins’, ‘quadrivoltins’, etc. 1948 Philos. Trans. (Royal Soc.) B. 233 414 Watanabe, K. 1918a On the hereditary characters of bivoltins and quadrivoltins in silkworms. B. adj. Of a silkworm moth: producing four broods or generations in a year. Now rare. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > Heterocera > [adjective] > producing four broods a year quadrivoltine1909 1909 Cent. Dict. Suppl. Quadrivoltine, having four crops of cocoons each year, and therefore having four generations annually: said of certain races of the sikworms of commerce. 1910 Science 15 Apr. 588/1 Some successful results have been recently reported in changing a trivoltine race into a quadrivoltine. 1969 R. F. Chapman Insects xxxv. 719 In Bombyx mori..univoltine, bivoltine and quadrivoltine strains are known. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.adj.1888 |
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