- Hypocleida
- Hypocleidium Hy`po*clei"di*um, n.; pl. L. {Hypocleida}, E. {Hypocleidiums}. [NL., fr. Gr. ? under + ? a little key.] (Anat.) A median process on the furculum, or merrythought, of many birds, where it is connected with the sternum. [1913 Webster]
The Collaborative International Dictionary of English. 2000.