Origin of inionModern Latin from Gr, the back of the head from is (gen. inos), sinew, muscle, literally , strength, akin to Classical Latin vis, strength from Indo-European an unverified form w?s- from base an unverified form wei-, to strive forward, from source Classical Latin via
Origin of inionGreek īnion occipital bone from īs īn- sinew, fiber ; see wei- in Indo-European roots.
(plural inia or inions)
- (anatomy) A small protuberance on the external surface of the back of the skull near the neck; the external occipital protuberance.
From Ancient Greek ἰνίον (inion, “occipital bone; back of the head”).