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The most prominent projecting point of the occipital bone at the base of the skull.

[Greek īnion, occipital bone, from īs, īn-, sinew, fiber; see wei- in Indo-European roots.]


(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]


(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]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
References in classic literature ?
He wanted to, last Sunday, but I stopped him just as he was goin' out of the door with four heads strung on a string, for all the airth like a string of inions.
Doug and Liz Inions, of Yarm, were two of the first guests enjoying a visit to the Nancy Tennant bar.
Training up to four times a week, he has been helped by colleagues Paul Inions and Paul Hill who all work together at McPhillips Civil Engineers based in Telford.
The poem and article, she wrote, are controversial, but "there can be no de= bate that the laws of freedom of speech apply to them, as they do to all op= inions =96 those we like and those we do not.
They ffer I couldn't so brought inions about her who is perhaps ered for playn the original uft says she nd hard about part.