cryoanaesthesia vs. cryoanesthesia
cystoparalysis vs. cystoplegia
cryptorchidism vs. cryptorchidy
cardiomyopathy vs. myocardiopathy
coccidioidomycosis vs. coccidiomycosis
clinocephalism vs. clinocephaly
cephalhematoma vs. cephalohematoma
cerebromeningitis vs. meningoencephalitis
conceivability vs. conceivableness
cacodyl vs. tetramethyldiarsine
chloropicrin vs. nitrochloroform