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单词 citigrade
释义

citigraden.adj.

Brit. /ˈsɪtᵻɡreɪd/, U.S. /ˈsɪdəˌɡreɪd/
Forms: also with capital initial.
Origin: Either (i) a borrowing from Latin. Or (ii) a borrowing from French. Etymons: Latin Citigradae; French citigrades.
Etymology: < (i) scientific Latin Citigradae, former group name (1826 or earlier; also Citigrada ), or its etymon (ii) French citigrades, plural noun (1817 or earlier, attributed to P.-A. Latreille; also 1817 as adjective) < classical Latin citus swift, use as adjective of past participle of ciēre cite v. + -gradus -grade comb. form; compare -ae suffix.
Zoology. Now disused.
A. n.
A spider of the former group Citigrada or Citigradae, which comprised swift-running kinds, as wolf spiders. Contrasted with laterigrade and saltigrade.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Arachnida > [noun] > order Aranea > miscellaneous types > member of the Citigrada
citigrade1830
1830 Encycl. Americana IV. 529 (table) Arachnides..Laterigrades. Citigrades. Saltigrades.
1839 C. Darwin in R. Fitzroy & C. Darwin Narr. Surv. Voy. H.M.S. Adventure & Beagle III. ix. 188 A spider..which in its general appearance resembled a Citigrade.
1865 T. R. Jones Animal Creation 197 The Vagabond Arachnidans..are divided into two sections—The Citigrades, or Runners, and the Saltigrades, or Leapers. The Citigrades [are] called also Wolf Spiders.
1904 Encycl. Americana XV. at Spiders Citigrades (Citigradæ) , many of which, as the lycosids, burrow in the ground.
B. adj.
Designating spiders of the former group Citigrada or Citigradae; of or relating to such spiders.
ΚΠ
1848 J. Boag Pop. Eng. Dict. Citigrade, relating to the Citigradæ tribe of spiders.
1878 Proc. Acad. Nat. Sci. Philadelphia 338 The points..make quite complete the mode of ballooning, least among the Citigrade, and perhaps also the Saltigrade Spiders.
1912 J. H. Comstock Spider Bk. v. 222 (list) The Citigrade or Running Spiders. Family Pisauridæ... Family Lycosidæ... Family Oxyopidæ.
This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).
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n.adj.1830
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