inion(redirected from External occipital protuberance)
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The most prominent projecting point of the occipital bone at the base of the skull.
(Anatomy) anatomy the most prominent point at the back of the head, used as a point of measurement in craniometry
[C19: from Greek: back of the head]
in•i•on(ˈɪn i ən)
the bulging part of the human occipital bone at the back of the skull.
[1805–15; < New Latin < Greek īníon nape of the neck]
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|Noun||1.||inion - the craniometric point that is the most prominent point at the back of the head (at the occipital protuberance)|
craniometric point - a landmark on the skull from which craniometric measurements can be taken
occipital bone - a saucer-shaped membrane bone that forms the back of the skull