英语词汇“arachnoid”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

arachnoid

释义

arachnoid, a. and n.|əˈræknɔɪd|
[ad. mod.L. arachnoīdes, a. Gr. ἀραχνο-ειδής cobweb-like: see -oid.]
A. adj.
1. Bot. Covered with or formed of long, delicate, cobweb-like hairs or fibres.
1857Berkeley Cryptog. Bot. §401 An arachnoid or woven veil attached to the edge, and sometimes entirely covering the gills.1874M. C. Cooke Fungi 91 Arachnoid threads.
2. Phys. Of or pertaining to the arachnoid. (See B.)
1789Loiterer 26 Sept. No. 35, p. 9 The dura and the pia Mater, and the arachnoid coat, entirely consisted of the Wings of Moths.1836–39Todd Cycl. Anat. & Phys. II. 278/1 The chamber is lined by the arachnoid membrane.1872Huxley Phys. xi. 249 It secretes..the arachnoid fluid.
3. Ent. Resembling the Arachnida.
1852Dana Crust. i. 14 The Arachnoid type, as in Nymphon.
B. n. The delicate serous membrane or membranous sac lining the dura mater, and enveloping the brain and spinal cord.
[1751Chambers Cycl., Arachnoides..a fine, thin, transparent membrane..supposed to invest the whole substance of the brain, medulla oblongata, and spinal marrow.]1839–47Todd Cycl. Anat. & Phys. III. 638/1 The arachnoid covers the superior surface of the cerebellum.

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