caconym

carbon, carbohydrate

cardio-，在元音之前cardi-
cardiogram
cardi-
myocardium, pericarditis, pericardium

catalysis, catalytic, catalogue, catabolism, cataclasm, cataclysm, catafalque, catalectic, catalepsy, cataphract, cataplexy, cataract, catarrh, catastrophe, catatonia, catawampus

anencephalic, bicephalous, cephalalgia, cephalic, cephalization, cephalopod, cephalothorax, dicephalous, hydrocephalus, macrocephalic, microcephalic

ceratoid, ceratopsian

cerebral, cerebrum, cerebrovascular, cerebrospinal

chirography, chirology, chiropodist, chiropractic, chirosophy

chondrogenic, chondrocyte, chondroitin

chromatophore

chrysalis, chrysanthemum, chryselephantine

circumambient, circumambulate, circumbendibus, circumcise, circumcision, circumduction, circumference, circumflex, circumfluent, circumjacent, circumlocution, circumnavigate, circumpolar, circumscribe, circumspect, circumspection

cisalpine, cisgender, cismontane

clinometer, clinopyroxene

co-act, coadaptation, coadjacent, coarticulation, co-author, coaxial, co-belligerent, co-defendant, co-dependent, codominant, co-education, coefficient, coequal, coerce, coessential, coeternal, coevolution

collinear, colleague

complete, component, common

concatenate, concatenation, concave, concavity, conceal, concede, conceive, concent, concentrate, concentric, concept, conception, concern, concert, concession

contradistinction, contradistinguish, contra-indicate, contralateral

coprolite, coprophagia, coprophagy, coprophilia

counter, counteract, counter-argument, counterattack, counterbalance, countercharge, counterclockwise, counterculture, counter-current, counterfactual, counterinsurgency, counterintelligence, counterintuitive, countermarch, countermeasure, counter-offer, counterpoint

cross-beam, crossbones, cross-breed, cross-country, cross-current, cross-dressing, cross-eyes, cross-fire, cross-hair, cross-legged, cross-lots, cross-pollination, cross-purpose, cross-reference, crossroad, cross-stitch, cross-street, cross-tie

bicycle, cyclone, epicycle