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opisthion [ o·pis·thi·on ]

[
US
ɑːpɪsθiən ]
[
UK
ɒpɪsθiən ]
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Noun

1. The midpoint of the posterior border of the foramen magnum.

Origin

1. Late 19th century. From French opisthion from ancient Greek ὀπίσθιον hinder part, use as noun of neuter singular of ὀπισθίος belonging to the hinder parts from ὄπισθεν behind + -ιος, suffix forming adjectives.

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