请输入您要查询的英文单词:

 

单词 adelgid
释义

adelgidn.adj.

Brit. /aˈdɛldʒɪd/, U.S. /æˈdɛldʒᵻd/
Origin: A borrowing from Latin, combined with an English element. Etymons: Latin Adelges , -id suffix3.
Etymology: < scientific Latin Adelges, genus name (J. N. Vallot 1836, in Mém. de l'Acad. des Sci., Arts, et Belles-lettres de Dijon 227); probably < -adelges (in either Phytadelges, family name, or zoadelges, both 1832 in Duméril: see note) + -id suffix3. Compare scientific Latin Adelgidae, family name (1931 or earlier). Compare French adelge (Vallot 1836).Duméril derives scientific Latin Phytadelges and zoadelges < ancient Greek ἀδελγεῖν to suck, but this form is not attested in Greek; there may be some confusion with ancient Greek ἀμελγεῖν to milk, to suck up (moisture), to drink.
Entomology.
A. n.
Any of various homopteran bugs constituting the family Adelgidae, closely related to aphids, which feed on the sap of coniferous trees, often form galls, and at certain stages of the life cycle are covered with a white, wool-like waxy secretion.
ΚΠ
1928 P. N. Annand in Stanford Univ. Publ. Ser. Biol. Sci. 6 iv. 21 Larix, Pseudotsuga..or Abies being the intermediate host depending on the species of Adelgid involved.
1964 Q. Jrnl. Forestry 58 160 The silver fir adelgids can be identified by examining..the dorsal surfaces of individuals of the neosistentes stage.
2007 New Yorker 10 Dec. 67/1 These invasives often flourish in their new ecosystems because, like the woolly adelgid, they have escaped their predators.
B. adj. (attributive).
Of or relating to adelgids.
ΚΠ
1937 B. H. Wilford Spruce Gall Aphid 30 Growth is not usually retarded by adelgid attack.
1971 Nature 2 July 13/2 This publication includes morphological keys and descriptions of fourteen morphs of the nine adelgid species having alatae in Britain.
1987 Reader's Digest Encycl. Garden Plants & Flowers (ed. 4) 746/1 Adelgid colonies are conspicuous during summer when they produce coverings of white waxy wool which may prevent chemical control.
2003 T. Silver Mount Mitchell & Black Mountains vi. 237 In Canada and New England, as in northern Europe, cold temperatures kept adelgid populations in check.
This is a new entry (OED Third Edition, December 2011; most recently modified version published online December 2021).
<
n.adj.1928
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/23 21:22:31