epicuticulan.

Brit.

/ˌɛpᵻkjuːˈtɪkjᵿlə/, U.S.

/ˌɛpəˌkjuˈtɪkjələ/

Origin: Formed within English, by derivation. Etymons: epi- prefix, cuticula n.

Etymology: < epi- prefix + cuticula n. In sense 1 after German Epicuticula (1884 or earlier). Compare slightly earlier epicuticle n.

Zoology.

†1. The outermost layer of the shell in certain molluscs; = periostracum n. Obsolete.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > Testacea (shelled molluscs) > shelled mollusc > shell

seashella900

shale1561

buckie1596

caracol1622

valve1661

spire1681

umbilicus1688

conch-shell1697

wart-shell?1711

needle1713

multivalve1753

concha1755

periosteum1758

conch1773

devil's claw1773

furbelow1776

peewit's egg1776

worm-tube1776

rosebud1815

sheath1815

periostracum1833

epicuticle1885

epicuticula1886

leg of mutton1891

trivalve1891

1886 Jrnl. Royal Microsc. Soc. 6 955 After noting the character of the epithelium, the so-called ‘protoplasmic processes’ of the cells, the distribution of cilia, the formation of the epicuticula, &c., Herr Drost discusses somewhat minutely the relation of certain dark brown spots at the upper end of both siphons.

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 124 The epicuticula is purely organic and is composed of conchiolin like the organic substratum of the rest of the shell.

1900 Proc. & Trans. Liverpool Biol. Soc. 14 190 From it a cuticular structureless membrane passes off over the free edge of the shell forming the epicuticula or periostracum.

2. The thin, often waxy outermost layer of the cuticle of an insect or other arthropod; = epicuticle n. 3. Now rare.

ΚΠ

1929 F. L. Campbell in Ann. Entomol. Soc. Amer. 22 415 Following the suggestion of Mr. R. E. Snodgrass, of the Bureau of Entomology, the writer calls the extremely thin outermost layer (Grenzlamelle) the epicuticula, the brittle, pigmented outer layer (epidermis, Pigmentschichte) the exocuticula, and the flexible, colorless inner layer (dermis, Hauptlage) the endocuticula.

1944 R. Matheson Entomol. for Introd. Courses iii. 38 The two primary layers are composed mainly of chitin, whereas the epicuticula is non-chitinous.

1994 P. J. King tr. K. Urich Compar. Animal Biochem. xv. 591/1 The insect cuticula has a complicated layered structure... The outermost layer is the thin epicuticula with four sublayers.

This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022).

单词	epicuticula
释义	epicuticulan. Brit. /ˌɛpᵻkjuːˈtɪkjᵿlə/, U.S. /ˌɛpəˌkjuˈtɪkjələ/ Origin: Formed within English, by derivation. Etymons: epi- prefix, cuticula n. Etymology: < epi- prefix + cuticula n. In sense 1 after German Epicuticula (1884 or earlier). Compare slightly earlier epicuticle n. Zoology. †1. The outermost layer of the shell in certain molluscs; = periostracum n. Obsolete. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > Testacea (shelled molluscs) > shelled mollusc > shell seashella900 shale1561 buckie1596 caracol1622 valve1661 spire1681 umbilicus1688 conch-shell1697 wart-shell?1711 needle1713 multivalve1753 concha1755 periosteum1758 conch1773 devil's claw1773 furbelow1776 peewit's egg1776 worm-tube1776 rosebud1815 sheath1815 periostracum1833 epicuticle1885 epicuticula1886 leg of mutton1891 trivalve1891 1886 Jrnl. Royal Microsc. Soc. 6 955 After noting the character of the epithelium, the so-called ‘protoplasmic processes’ of the cells, the distribution of cilia, the formation of the epicuticula, &c., Herr Drost discusses somewhat minutely the relation of certain dark brown spots at the upper end of both siphons. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 124 The epicuticula is purely organic and is composed of conchiolin like the organic substratum of the rest of the shell. 1900 Proc. & Trans. Liverpool Biol. Soc. 14 190 From it a cuticular structureless membrane passes off over the free edge of the shell forming the epicuticula or periostracum. 2. The thin, often waxy outermost layer of the cuticle of an insect or other arthropod; = epicuticle n. 3. Now rare. ΚΠ 1929 F. L. Campbell in Ann. Entomol. Soc. Amer. 22 415 Following the suggestion of Mr. R. E. Snodgrass, of the Bureau of Entomology, the writer calls the extremely thin outermost layer (Grenzlamelle) the epicuticula, the brittle, pigmented outer layer (epidermis, Pigmentschichte) the exocuticula, and the flexible, colorless inner layer (dermis, Hauptlage) the endocuticula. 1944 R. Matheson Entomol. for Introd. Courses iii. 38 The two primary layers are composed mainly of chitin, whereas the epicuticula is non-chitinous. 1994 P. J. King tr. K. Urich Compar. Animal Biochem. xv. 591/1 The insect cuticula has a complicated layered structure... The outermost layer is the thin epicuticula with four sublayers. This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022). < n.1886
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