non-arachnoid
|non-a-rach-noid|
🇺🇸
/ˌnɑn.əˈræk.nɔɪd/
🇬🇧
/ˌnɒn.əˈræk.nɔɪd/
not spider-like; not of the arachnoid membrane
Etymology
'non-arachnoid' originates from English, formed by the prefix 'non-' + the adjective 'arachnoid'; 'non-' meant 'not' and 'arachnoid' derives from Greek 'aráchnē' meaning 'spider'.
'arachnoid' entered English via New Latin/Greek (19th century) as 'arachnoides'/'arachnoides' and became 'arachnoid'; 'non-' was added in English to create the negated compound 'non-arachnoid'.
Initially, 'arachnoid' meant 'spider-like'; over time it gained a specific anatomical sense referring to the arachnoid membrane, and 'non-arachnoid' has come to be used particularly to denote 'not of the arachnoid membrane' in medical contexts.
Meanings by Part of Speech
Adjective 1
not of or relating to the arachnoid (the arachnoid mater); located outside or not part of the arachnoid membrane (medical/anatomical).
The surgeon noted that the mass appeared non-arachnoid and lay external to the arachnoid membrane.
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Adjective 2
not spider-like; lacking characteristics or appearance of spiders (used descriptively in zoological or figurative contexts).
The web pattern on the fossil was considered non-arachnoid, suggesting it was created by a different group of organisms.
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Last updated: 2026/01/01 10:13