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| 单词 | triact |
| 释义 | > as lemmastriact triact adj. Brit. , U.S. Zoology having three rays: said of a sponge-spicule. [Shortened < scientific Latin Triactina, genus name (see triactine adj.).] ΘΚΠ the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three rays triact1886 triactine1887 triactinal1891 1886 R. von Lendenfeld in Proc. Zool. Soc. 560 The calcareous triaxon spicules have only three rays—triact. < as lemmas |
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