Meaning of “arachnoid” in the English Dictionary

british dictionary

"arachnoid" in British English

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arachnoidnoun [ C ]

uk /əˈræk.nɔɪd/ us /əˈræk.nɔɪd/ specialized

the delicate covering of the brain or spinal cord:

Symptoms associated with an arachnoid cyst can include headaches, nausea, seizures, and visual disturbances.

(Definition of “arachnoid” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)