单词 | hexact |
释义 | > as lemmashexact hexact adj. and n. Brit. /ˈhɛksakt/ , U.S. /ˈhɛkˌsækt/ = hexactine adj. and n.ΘΚΠ the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having six rays hexact1886 oxyhexact1886 hexactine1887 the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > having rays > having six rays hexact1886 hexactine1887 tornhexactine1909 tylhexactine1909 1886 R. von Lendenfeld in Proc. Zool. Soc. 590 The Recent Families of Sponges... With hexact spicules and thimble-shaped chambers. 1887 tr. F. E. Schulze in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XXI. 29 Regular Hexacts are all spicules in which the rays lie at right angles to one another, and are of equal length and similar form. 1940 L. H. Hyman Invertebrates I. vi. 327 They [sc. triacts] may show their origin from a hexact by the presence near the middle of knobs or branches of the axial fibre. < as lemmas |
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