glabello-|gləˈbɛləʊ|comb. form of glabella, as glabello-inial, glabello-occipital, pertaining to the glabella together with the inion, the occiput.1863Huxley Man's Place Nat. iii. 120 Fig. 23: the skull from the Cave of Engis... a, glabella; b, occipital protuberance; a to b, glabello-occipital line.1866― Preh. Rem. Caithn. 119 Dr. Thurnam figures a typical skull of these long-barrow Britons, which he thus describes..The greatest length is 7·3 inches (the glabello-inial diameter 7·1 inches).