acutangular is a compound of Latin acutus ('sharpened, pointed') and angularis ('having angles'), from angulus ('corner, angle'). Modern Latinate coinage for sharp-angled figures. Morphologically, the word is transparent as a compound: its parts remain visible in the modern spelling, while the older history of those parts supplies the deeper ancestry. In modern use, the adjective sense is "having acute angles; sharp-angled", which keeps the etymology connected to the word's present dictionary value rather than treating it as a merely historical label. The wider word family includes related English forms such as acute, angular, angle, showing how the same base continues to support neighboring English vocabulary. The principal historical forms in the chain include Latin acutus, Latin angulus, which anchor the explanation in named linguistic material.