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单词 hexactine
释义

> as lemmas

hexactine
hexactine adj. and n.
Brit. /hɛkˈsaktɪn/
,
U.S. /hɛkˈsæktən/
[Greek ἀκτίς, ἀκτῖνος ray] Zoology (a) adj. having six rays, as a sponge-spicule; (b) n. a sponge-spicule having six rays.
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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
1887 Encycl. Brit. XXII. 417 Modifications of the triaxon hexactine type.
1900 E. A. Minchin in E. R. Lankester Treat. Zool. II. iii. 117 One or more rays of the hexactine..may become modified in various ways.
1940 L. H. Hyman Invertebrates I. vi. 327 The basic regular hexactine consists of three axes crossing at right angles, forming six rays of approximately equal length.
extracted from hexa-comb. form
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as lemmas
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