One of the mysteries of the English language finally explained.
In certain nematodes: a tooth-like process or ridge located on the internal ventral surface of the cephalic capsule.
Late 19th century (in an earlier sense). From ancient Greek τρόπις keel from an ablaut variant ( o -grade) of the base of τρέπειν to turn + -ις.
In this article we explore how to impress employers with a spot-on CV.