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单词 demodex
释义

Demodexn.

Brit. /ˈdiːmədɛks/, /ˈdɛmədɛks/, U.S. /ˈdiməˌdɛks/, /ˈdɛməˌdɛks/
Inflections: Plural unchanged, Demodices, Demodectes, Demodeces.
Forms: also with lower-case initial.
Origin: A borrowing from Latin. Etymon: Latin Demodex.
Etymology: < scientific Latin Demodex, genus name ( R. Owen Lect. Compar. Anat. Invertebr. Animals (1843) 252) < ancient Greek δημός fat, of uncertain origin + Byzantine Greek δήξ woodworm, of unknown origin.With the plural form Demodices compare vortices , plural of vortex n. With the plural form Demodectes compare demodectic adj.
Zoology.
A parasitic mite of the genus Demodex, of which one species, D. folliculorum, infests the hair follicles and sebaceous follicles in the skin of humans and domestic animals; a follicle mite. Also: the genus itself.
ΚΠ
1843 R. Owen Lect. Compar. Anat. Invertebr. Animals Gloss. 377 Demodex,..the worm-like parasite of the human sebaceous follicles.
1844 Mirror of Lit. 6 Jan. 12/1 These parasites..belong to the genus Demodex (Owen), first discovered, figured, and described [as a species of Acarus] by Dr Lemon, of Berlin.
1844 Ann. & Mag. Nat. Hist. 13 76 The human Demodices vary much even among themselves.
1864 All Year Round 9 July 512/1 The demodex, found in the white matter squeezed from the human nose, or detected in the wax of the human ear.
1876 P. J. Van Beneden Animal Parasites & Messmates vi. 134 The dog harbours a demodex (D. caninus) which causes it to lose its hair.
1919 Jrnl. Compar. Pathol. & Therapeutics 32 104 A short general review of the Demodectes as the cause of various forms of dermatitis or mange.
1932 L. Van Es Princ. Animal Hygiene xiii. 308 Demodex mites are difficult to destroy.
1996 Health Advisor Dec. 38/1 Kempe found that liquid liver extract was effective against demodex mites.
2003 Rosacea Rev. Summer 3/1 Studies have found an elevated incidence of Demodex in rosacea patients.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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n.1843
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