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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.
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.