| Scrabble Word | Definition |
| caddisworm19 | The larva of the caddis fly. |
| cafetorium17 | A large room, usually in a school, used as both a cafeteria and an auditorium. |
| cankerworm21 | Either of two caterpillars, the larvae of geometrid moths, that are destructive to fruit, buds and leaves. |
| capitalism16 | (politics) A socio-economic system based on private ownership of resources or capital. |
| capitellum16 | (botany, anatomy, arachnology) Synonym of capitulum |
| cardiogram16 | (cardiology) The visual output an electrocardiograph produces |
| catabolism16 | (biochemistry) Destructive metabolism, usually including the release of energy and breakdown of materials. |
| Scrabble Word | Definition |
| cabbalism17 | |
| cablegram16 | A telegram transmitted via a submarine cable. |
| caciquism24 | The political influence of caciques in Latin America. |
| caesarism13 | |
| cairngorm14 | A precious stone of smoky yellow-brown or gray-brown color, used in Scottish jewellery. |
| calcaneum15 | (anatomy) The calcaneus. |
| caldarium14 | In Roman baths, the hottest room, with a plunge-pool. It preceded the tepidarium and frigidarium. |
| calvarium16 | (anatomy) The upper, domelike portion of the skull (without the lower jaw). |
| candygram18 | A box of candy/lollies, delivered with a greeting or other prepared message, often used for Valentine's Day dances. |
| capitulum15 | (botany) A densely clustered inflorescence composed of a large number of individual florets arising from a platform-like base. |
| carbonium15 | (dated, chemistry, deprecated) Any of several organic cations; carbocation or carbenium. |
| careerism13 | The overwhelming desire or urge to advance one's own career or social status, usually at the expense of other personal interests or social growth. |
| cartogram14 | (dated) A map used to indicate geographically-bound statistical information, typically region-by-region values of a given variable, for example by using different shadings for different ranges of values. |
| castoreum13 | The bitter exudate of the castor sacs of mature beavers. |
| cataclysm18 | A sudden, violent event. |
| cataplasm15 | (medicine) A poultice or plaster, spread over one's skin as medical treatment. |
| catechism18 | A book, in question and answer form, summarizing the basic principles of Christianity. |
| Scrabble Word | Definition |
| cabalism14 | The activities of a cabal; secret plotting. |
| caladium13 | Any of the genus Caladium of flowering plants, especially an ornamental cultivar of Caladium bicolor. |
| capsicum16 | Any of several tropical American plants, of the genus Capsicum, principally the species Capsicum annuum and Capsicum frutescens, that are cultivated as edible peppers. |
| cardamom15 | The Elettaria cardamomum, an Indian herb. |
| cardamum15 | Archaic form of cardamom. |
| caseworm15 | A worm or grub that makes a case for itself. |
| casteism12 | discrimination based on a person's caste |
| Scrabble Word | Definition |
| caconym16 | An incorrect name for something, especially in taxonomic classification. |
| cadmium14 | A chemical element (symbol Cd) with an atomic number of 48: a soft, silvery-white metal. |
| caesium11 | The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal. |
| calcium13 | The chemical element (Symbol Ca), with an atomic number 20. It is a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks. |
| cambism15 | (rare) The business of currency exchange. |
| cambium15 | (botany) A layer of cells between the xylem and the phloem that is responsible for the secondary growth of roots and stems. |