Pronunciation: (kôr'pu-sul, -pus-ul),[key] —n. 1. Biol.an unattached cell, esp. of a kind that floats freely, as a blood or lymph cell.
2. Anat.a small mass or body forming a more or less distinct part, as the sensory receptors at nerve terminals.
3. Physical Chem.a minute or elementary particle of matter, as an electron, proton, or atom.
4. any minute particle. Also,cor•pus•culePronunciation: (kôr-pus'kyOOl).[key]