INION - Definition

Pronunciation:		'ineeun
WordNet Dictionary

	Definition:	[n] the craniometric point that is the most prominent point at the back of the head (at the occipital protuberance)

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	See Also:	craniometric point, occipital bone

Webster's 1913 Dictionary

	Definition:	\In"i*on\, n. [NL., fr. Gr. 'ini`on the back of the head.] (Anat.) The external occipital protuberance of the skull.