collimateTo focus into a narrow beam or column; to adjust a focusing device so that it produces a narrow beam.
collyriumA lotion or liquid wash used as a cleanser for the eyes; an eye-salve.
colocynthA viny plant, of species Citrullus colocynthis, native to the Mediterranean Basin and Asia. It produces a lemon-sized, yellowish, green-mottled, spongy, and extremely bitter fruit.
colophonyRosin; the residue left after the distillation of oil of turpentine from liquid resin, used in pharmaceutical preparations, soldering fluxes, and by violinists.
commoratioThe use of several synonyms to emphasize something.
commotio cordisAn often lethal disruption of heart rhythm as a result of a blow to the area directly over the heart at a critical time during the cycle of a heartbeat.
communitasAn unstructured community of common experience.
confutationThe act or process of confuting; refutation.
congeriesA collection or aggregation of disparate items.
congiusA Roman unit of liquid measure reckoned as the volume of 10 Roman pounds of wine and equivalent to about 3.3 L although differing slightly over time.
consecuteTo follow closely; to endeavour to overtake; to pursue.
consecutio temporumA set of grammatical rules of a particular language, governing the agreement between the tenses of verbs in related clauses or sentences; agreement between tenses of verbs in accordance with said set of rules.
consessusAn assembly or congregation of people, especially in religious contexts.
consilium abeundiA traditional form of expulsion from an organization or school.
consociationAssociating, or coming together in a union; (countable) an instance of this.
constructio ad sensumA grammatical construction in which a word’s inflection is determined by the semantics of the word or words with which it associates, in contravention of what is required by grammar.
contra proferentemA doctrine of contractual interpretation providing that, where a term is ambiguous, the preferred meaning should be the one that works against the interests of the party who provided the wording.
contristateTo make sorrowful; to sadden or grieve.
contrudeto crowd or push together (in senses relating to teeth)
contubernalLiving in close proximity (as though sharing a tent); intimate, familiar.
contuberniumA type of quasi-marriage between slaves.
convelTo tear (tissue, a nerve, etc.), to convulse.
conventiculumA short intensive immersion workshop where participants speak only Latin (or sometimes Ancient Greek) from morning to night, typically featuring conversation circles, games, lectures, meals, and excursions, all conducted exclusively in the ancient language.