angulate comes from Latin angulatus, past participle of angulare ('to make angular'), from angulus ('corner, angle'), related to Ancient Greek ankylos ('crooked'). The path is chiefly one of transmission: an older form is taken into English, with the word's shape and meaning carried through the language names and forms preserved in the history. In modern use, the adjective sense is "having angles or sharp corners; angular in form", 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 angle, angular, angularity and derivatives such as angulation, angulated, showing how the same base continues to support neighboring English vocabulary. The principal historical forms in the chain include Latin angulatus, Latin angulus, which anchor the explanation in named linguistic material.