† periconchn.

Origin: Formed within English, by derivation. Etymons: peri- prefix, conch n.

Etymology: < peri- prefix + conch n. Compare dissoconch n., prodissoconch n. at pro- prefix² 1, and protoconch n. N.E.D. (1905) gives the pronunciation as (pe·rikǫŋk) /ˈpɛrɪkɒŋk/.

Zoology. Obsolete. rare.

An embryonic shell growing around the body in the veliger or larval form of a mollusc.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > mollusc or shell-fish > larva > part of

periconch1888

1888 Proc. Boston Soc. Nat. Hist. 23 542 Professors Hyatt and Brooks consider the protoconch in cephalous molluscs as..probably derived from the periconch of Scaphopods.

1888 Amer. Naturalist 22 876 The shell..is a periconch growing around the body in the veliger and finally coalescing to form a tube open at both ends.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2018).

单词	periconch
释义	† periconchn. Origin: Formed within English, by derivation. Etymons: peri- prefix, conch n. Etymology: < peri- prefix + conch n. Compare dissoconch n., prodissoconch n. at pro- prefix² 1, and protoconch n. N.E.D. (1905) gives the pronunciation as (pe·rikǫŋk) /ˈpɛrɪkɒŋk/. Zoology. Obsolete. rare. An embryonic shell growing around the body in the veliger or larval form of a mollusc. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > mollusc or shell-fish > larva > part of periconch1888 1888 Proc. Boston Soc. Nat. Hist. 23 542 Professors Hyatt and Brooks consider the protoconch in cephalous molluscs as..probably derived from the periconch of Scaphopods. 1888 Amer. Naturalist 22 876 The shell..is a periconch growing around the body in the veliger and finally coalescing to form a tube open at both ends. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2018). < n.1888
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