† pterygosteumn.

Inflections: Plural pterygostea.

Forms: 1800s pterigosteum, 1800s pterigostium, 1800s pterygosteum, 1800s pterygostium.

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

Etymology: < scientific Latin pterigosteum (a1818 or earlier) < pterygo- pterygo- comb. form + ancient Greek ὀστέον bone (see osteo- comb. form), with alteration of the second element after Latin nouns ending in -um.

Entomology. Obsolete.

A vein of an insect's wing. Usually in plural.

ΚΠ

1825 T. Say Explan. Terms Entomol. 27 Pterigostia or wing-bones, the nervures.

1826 G. Samouelle Gen. Direct. collecting Exotic Insects & Crustacea 35 Order 7.—Neuroptera. Wings four, membranaceous, generally of equal size, with numerous decussating pterigostia resembling a net-work.

1839 A. Ure Dict. Arts 41 The lepidoptera, or insects with four membranaceous wings, and pterigostea covered with mail-like scales, are very rare in amber.

1890 Cent. Dict. (at cited word) Pterygostium..(also pterygosteum..), one of the nervures or veins of an insect's wing.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online December 2020).

单词	pterygosteum
释义	† pterygosteumn. Inflections: Plural pterygostea. Forms: 1800s pterigosteum, 1800s pterigostium, 1800s pterygosteum, 1800s pterygostium. Origin: A borrowing from Latin. Etymon: Latin pterigosteum. Etymology: < scientific Latin pterigosteum (a1818 or earlier) < pterygo- pterygo- comb. form + ancient Greek ὀστέον bone (see osteo- comb. form), with alteration of the second element after Latin nouns ending in -um. Entomology. Obsolete. A vein of an insect's wing. Usually in plural. ΚΠ 1825 T. Say Explan. Terms Entomol. 27 Pterigostia or wing-bones, the nervures. 1826 G. Samouelle Gen. Direct. collecting Exotic Insects & Crustacea 35 Order 7.—Neuroptera. Wings four, membranaceous, generally of equal size, with numerous decussating pterigostia resembling a net-work. 1839 A. Ure Dict. Arts 41 The lepidoptera, or insects with four membranaceous wings, and pterigostea covered with mail-like scales, are very rare in amber. 1890 Cent. Dict. (at cited word) Pterygostium..(also pterygosteum..), one of the nervures or veins of an insect's wing. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online December 2020). < n.1825
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