Definition of capitellum in English:

capitellum

Pronunciation /ˌkapɪˈtɛləm/

noun

Anatomy Zoology
  • A capitulum; especially the rounded lateral condyle of the distal humerus, which articulates with the radius.

Origin

Mid 16th century (in an earlier sense). From post-classical Latin capitellum capital of a column (Vulgate), top of a tool, division or section of a psalm, kind of lye, (in botany) small knob at the end of e.g. a stigma, (in anatomy) capitulum, either from classical Latin caput head + -ellum, or from classical Latin capitulum with suffix substitution.