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单词 macrotrichium
释义

macrotrichiumn.

Brit. /ˈmakrə(ʊ)trᵻkɪəm/, U.S. /ˈmækroʊˌtrɪkiəm/
Inflections: Plural macrotrichia.
Origin: A borrowing from Greek, combined with an English element. Etymons: macro- comb. form, Greek τριχιον.
Etymology: < macro- comb. form + ancient Greek τριχιον ( < τριχ- , θρίξ hair (see tricho- comb. form1) + -ιον , diminutive suffix). Compare microtrichium n.; also earlier epitrichium n.
Entomology.
Any of the larger hairs on the body of certain insects, esp. those on the surface of the wings. Usually in plural.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > wings(s) > hairs on
macrotrichium1934
1934 C. H. Curran Families & Genera N. Amer. Diptera 487 Macrotrichia, the larger microscopic hairs on the surface of the wings.
1957 O. W. Richards & R. G. Davies Imms's Gen. Textbk. Entomol. (ed. 9) i. 38 Macrotrichia or true setae..are found on the main veins and their branches,..less frequently on the wing-membrane.
1970 E. F. Riek in Insects of Austral. (Commonw. Sci. & Industr. Res. Organization, Austral.) xxxvii. 875/2 Hooked macrotrichia may occur over most of the fore margin of the hind wing [in Hymenoptera].
1987 D. J. Weatherall et al. Oxf. Textbk. Med. (ed. 2) I. vi. 82/1 Urticating hairs or setae (macrotrichia) of caterpillars usually inject histamine..into the skin.
This entry has been updated (OED Third Edition, March 2000; most recently modified version published online March 2022).
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n.1934
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