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单词 oxydiact
释义

> as lemmas

oxydiact
oxydiact n. and adj. Obsolete (a) n. a sponge spicule having two pointed rays radiating from a single point; (b) adj. (of a sponge spicule) having two pointed rays radiating from a single point.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > having rays > having two rays
oxydiact1886
1886 R. von Lendenfeld Proc. Zool. Soc. 562 Oxydiact. Four rays rudimentary, only two rays lying in one straight line remain.
1890 Cent. Dict. Oxydiact a. and n.
extracted from oxy-comb. form1
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as lemmas
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