I. ˈkapə noun
( -s )
Etymology: Greek, of Semitic origin; akin to Hebrew kaph
: the 10th letter of the Greek alphabet — symbol Κ or κ; see alphabet table
II. noun
( -s )
Etymology: New Latin, from Greek kappa
: a cytoplasmic factor in certain paramecia that mediates production of paramecin and thereby makes the medium in which such animals are grown toxic to members of strains not possessing the factor