单词 | tetracoral |
释义 | > as lemmastetracoral tetracoral n. Brit. , U.S. one of the Tetracoralla, a division of corals (= rugosa n.) in which the septa are in multiples of four. [After scientific Latin Tetracoralla (1882 or earlier); compare German Tetracorallien, Tetrakorallien (1866 or earlier).] ΚΠ 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 743 The Palæozoic Corals are for the most part classified as Rugosa s. Tetracoralla... The septa are arranged in four systems, which are either disposed in a bilaterally symmetrical manner..or else are regularly radiate.] < as lemmas |
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