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单词 prodissoconch
释义

> as lemmas

prodissoconch
prodissoconch n.
Brit. /prə(ʊ)ˈdɪsəkɒŋk/
,
U.S. /proʊˈdɪsəˌkɑŋk/
Zoology the embryonic shell of a bivalve mollusc.
ΚΠ
1888 R. T. Jackson in Proc. Boston Soc. Nat. Hist. 23 543 In the oyster..this shell is not single, but double-valved, and, therefore, deserves a distinct name. As it precedes the dissoconch or true shell, I suggest the name prodissoconch or early double shell.
1952 Q. Rev. Biol. 27 268/1 The shape of the prodissoconch may serve to identify the species in each genus, which is..hardly possible when using the features of the adult oyster only.
1995 P. J. Hayward et al. in P. J. Hayward & J. S. Ryland Handbk. Marine Fauna N.W. Europe x. 598/2 Norway cockle... Prodissoconch and first growth stages typically smooth and glossy.
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as lemmas
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