pinacodermn.

Brit.

/ˈpɪnəkə(ʊ)dəːm/, U.S.

/ˈpɪnəkəˌdərm/

Origin: A borrowing from Greek, combined with English elements; modelled on a French lexical item. Etymons: Greek πινακ- , πίναξ , -o- connective, -derm comb. form.

Etymology: < ancient Greek πινακ-, πίναξ pinax n. + -o- connective + -derm comb. form, after French pinacoderme (1970 in the article of which quot. 1970 is a summary).

Zoology.

The layer of pinacocytes in a sponge.

ΚΠ

1964 W. C. Jones in Jrnl. Marine Biol. Assoc. 44 80 A short tube, enclosed by the porocyte, extends to the pinacoderm where it opens by a circular aperture.

1970 C. Lévi in W. G. Fry Biol. Porifera 353 Choanocytes and pinacocytes form, respectively, a choanoderm and a pinacoderm... The latter controls the interrelations between the mesohyl and the external medium.

1984 Science 14 Aug. 835 [They] adapted to toxic calcium excess in shallow, tropical marine environments by developing calicoblasts within the pinacoderm.

2001 Biol. Bull. 200 20/1 The cells beneath the pinacoderm differentiate to scleroblasts that form triradiate spicules.

This is a new entry (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	pinacoderm
释义	pinacodermn. Brit. /ˈpɪnəkə(ʊ)dəːm/, U.S. /ˈpɪnəkəˌdərm/ Origin: A borrowing from Greek, combined with English elements; modelled on a French lexical item. Etymons: Greek πινακ- , πίναξ , -o- connective, -derm comb. form. Etymology: < ancient Greek πινακ-, πίναξ pinax n. + -o- connective + -derm comb. form, after French pinacoderme (1970 in the article of which quot. 1970 is a summary). Zoology. The layer of pinacocytes in a sponge. ΚΠ 1964 W. C. Jones in Jrnl. Marine Biol. Assoc. 44 80 A short tube, enclosed by the porocyte, extends to the pinacoderm where it opens by a circular aperture. 1970 C. Lévi in W. G. Fry Biol. Porifera 353 Choanocytes and pinacocytes form, respectively, a choanoderm and a pinacoderm... The latter controls the interrelations between the mesohyl and the external medium. 1984 Science 14 Aug. 835 [They] adapted to toxic calcium excess in shallow, tropical marine environments by developing calicoblasts within the pinacoderm. 2001 Biol. Bull. 200 20/1 The cells beneath the pinacoderm differentiate to scleroblasts that form triradiate spicules. This is a new entry (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1964
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