| 单词 | arachnoid | 
| 释义 | a·rach·noid    (ə-răknoid′)adj. 1.  Anatomy   Of or relating to a delicate membrane enclosing the spinal cord and brain. 2.  Of, relating to, or resembling arachnids. 3.  Covered with or consisting of thin, soft, entangled hairs or fibers resembling those of a cobweb or spider's web. n. 1.  An arachnid. 2.  Anatomy   A delicate membrane that encloses the spinal cord and brain and lies between the pia mater and dura mater. [New Latin arachnoīdēs, from Greek arakhnoeidēs, cobweblike : arakhnē, spider + -oeidēs, -oid.]  | 
	
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