ptilinumn.

Brit.

/tᵻˈlʌɪnəm/, U.S.

/təˈlaɪnəm/

Inflections: Plural ptilina.

Origin: A borrowing from Latin. Etymon: Latin ptilinum.

Etymology: < scientific Latin ptilinum (1834 or earlier) < French ptiline ( J. B. Robineau-Desvoidy Essai sur les Myodaires (1830) i. 10), apparently arbitrarily < ancient Greek πτίλον soft feather, down, plume (see ptilo- comb. form).

Entomology.

A structure on the head of cyclorrhaphous dipteran flies which can be inflated (esp. to rupture the puparium) and later atrophies, leaving a suture.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Diptera or flies > [noun] > member of > parts of > ptilinum

ptilinum1853

1853 F. Walker Insecta Britannica: Diptera II. 2 The ptilinum is a soft membrane, which in many species, and especially in the newly-hatched flies, appears between the antennæ and the front.

1899 Cambr. Nat. Hist. VI. 442 About one-half of the Diptera possess a peculiar structure in the form of a head-vesicle called ‘ptilinum’.

1962 R. M. Gordon & M. M. J. Lavoipierre Entomol. for Students of Med. xxvii. 171 Having emerged from the puparium the insect pushes its way up through the soil to the surface by the alternate inflation and deflation of the ptilinum.

1994 P. J. Gullan & P. S. Cranston Insects vi. 158/2 Escape from the puparium is facilitated by eversion of a membranous sac on the head of the emerging adult, the ptilinum.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	ptilinum
释义	ptilinumn. Brit. /tᵻˈlʌɪnəm/, U.S. /təˈlaɪnəm/ Inflections: Plural ptilina. Origin: A borrowing from Latin. Etymon: Latin ptilinum. Etymology: < scientific Latin ptilinum (1834 or earlier) < French ptiline ( J. B. Robineau-Desvoidy Essai sur les Myodaires (1830) i. 10), apparently arbitrarily < ancient Greek πτίλον soft feather, down, plume (see ptilo- comb. form). Entomology. A structure on the head of cyclorrhaphous dipteran flies which can be inflated (esp. to rupture the puparium) and later atrophies, leaving a suture. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Diptera or flies > [noun] > member of > parts of > ptilinum ptilinum1853 1853 F. Walker Insecta Britannica: Diptera II. 2 The ptilinum is a soft membrane, which in many species, and especially in the newly-hatched flies, appears between the antennæ and the front. 1899 Cambr. Nat. Hist. VI. 442 About one-half of the Diptera possess a peculiar structure in the form of a head-vesicle called ‘ptilinum’. 1962 R. M. Gordon & M. M. J. Lavoipierre Entomol. for Students of Med. xxvii. 171 Having emerged from the puparium the insect pushes its way up through the soil to the surface by the alternate inflation and deflation of the ptilinum. 1994 P. J. Gullan & P. S. Cranston Insects vi. 158/2 Escape from the puparium is facilitated by eversion of a membranous sac on the head of the emerging adult, the ptilinum. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1853
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