| carcinogen | carcinógeno |
| carcinogenic | cancerígeno |
| carcinogenicity | carcinogenicidad |
| carcinogenicity test | prueba de carcinogenicidad |
| Carcinology | Carcinología |
| carcinoma | carcinoma |
| Carcinoma of the penis | Carcinoma de pene |
| card | cromo |
| card game | partida de cartas |
| card index | fichero |
| Card manipulation | Cartomagia |
| Card model | Papercraft |
| Card scraper | Raedera |
| Cardamine flexuosa | Cardamine flexuosa |
| Cardamine hirsuta | Cardamine hirsuta |
| Cardamine impatiens | Cardamine impatiens |
| Cardamine pratensis | Cardamine pratensis |
| cardamom | cardamomo |
| Cardamom Hills | Cardamom Hills |
| Cardan grille | Rejilla de Cardano |
| Cardassian | Cardasianos |
| cardboard | cartón |
| cardboard box | caja de cartón |
| Cardcaptor Sakura | Cardcaptor Sakura |
| Cardea | Cardea |
| Cardenal Caro Province | Provincia de Cardenal Caro |
| cardfile | fichero |
| cardiac | cardíaco |
| cardiac arrest | paro cardiaco |
| Cardiac catheterization | Cateterismo cardíaco |
| Cardiac defect | Cardiopatía congénita |
| Cardiac orifice | Cardia |
| cardiac pacemaker | marcapasos |
| Cardiff | Cardiff |
| Cardiff Castle | Castillo de Cardiff |
| Cardiff University | Universidad de Cardiff |
| cardigan | chaqueta de punto |
| cardinal | número cardinal |
| Cardinal bird | Cardenal |
| Cardinal mark | Abalizamiento |
| Cardinal Mazarin | Julio Mazarino |
| cardinal number | número cardinal |
| cardinal numeral | adjetivo cardinal |
| cardinal point | punto cardinal |
| Cardinal points | Puntos cardinales |
| Cardinal Richelieu | Cardenal Richelieu |
| Cardinal Secretary of State | Secretaría de Estado de la Santa Sede |
| Cardinal-Infante Afonso of Portugal | Alfonso de Portugal |
| Cardinal-Infante Ferdinand | Fernando de Austria |
| cardinality | cardinalidad |
| cardio- | cardio- |
| Cardiocrinum | Cardiocrinum |
| cardiogram | cardiograma |
| cardiograph | cardiograma |
| cardiological | cardiológico |
| cardiologist | cardiólogo |
| cardiology | cardiología |
| cardioplegia | cardioplejia |
| Cardiotocography | Ultrasonido |
| cardiovascular | cardiovascular |
| cardiovascular disease | enfermedades cardiovasculares |
| cardiovascular system | sistema cardiovascular |
| Cardioversion | Desfibrilación y Cardioversión eléctrica |
| Cardium Pottery | Cerámica cardial |
| Cardolan | Cardolan |
| cardoon | cardo |
| cardsharp | tahúr |
| Carduelis | Carduelis |
| Carduus | Carduus |
| care | atención |
| Care Bears | Ositos Cariñositos |
| care for | atender |
| care of | a la atención de |
| Careca | Careca |
| careen | carenar |
| career | carrera |
| Career portfolio | Portafolio de inversiones |
| careerist | ambicioso |
| carefree | inconsciente |
