12-letter words containing o, s, i
- chrysomelids — Plural form of chrysomelid.
- chylomicrons — Plural form of chylomicron.
- chymotrypsin — a powerful proteolytic enzyme secreted from the pancreas in the form of chymotrypsinogen, being converted to the active form by trypsin
- cichoraceous — relating to plants of the sub-order Cichoraceae
- cinque ports — an association of ports on the SE coast of England, originally consisting of Hastings, Romney, Hythe, Dover, and Sandwich, which from late Anglo-Saxon times provided ships for the king's service in return for the profits of justice in their courts. The Cinque Ports declined with the growth of other ports and surrendered their charters in 1685
- circuitously — roundabout; not direct: a circuitous route; a circuitous argument.
- circulations — Plural form of circulation.
- circumcision — surgical removal of the foreskin of males
- circumfluous — flowing all around
- circumfusion — to pour around; diffuse.
- cirrocumulus — a high cloud of ice crystals grouped into small separate globular masses, usually occurring above 6000 metres (20 000 feet)
- cirrostratus — a uniform layer of cloud above about 6000 metres (20 000 feet)
- cirrus logic — (company) A manufacturer of integrated circuits including the Advanced RISC Machine and display interface processors and cards for use as Windows accelerators (requiring dedicated driver software).
- civilisation — Alternative spelling of civilization.
- cladogenesis — adaptive evolution leading to a greater variety of species
- cladosporium — any of the species of fungi in the genus Cladosporium
- claims ratio — The claims ratio is the percentage of claims costs incurred in relation to the premiums earned.
- clairvoyants — Plural form of clairvoyant.
- clams casino — broiled clams topped with garlic butter, bacon, bread crumbs, etc. and served in their bottom shells
- class action — A class action is a legal case brought by a group of people rather than an individual.
- classloading — (computing, Java) The dynamic loading of classes into a virtual machine, as performed by a classloader.
- claustration — the act of confining to a small space (usually a cloister)
- cleistogamic — Alternative form of cleistogamous.
- cleptobiosis — an ecological relationship in which members of one species, as of ants, steal food from another.
- clerestories — Plural form of clerestory.
- clerofascist — A cleric supporting fascism or advocating a synthesis of religion and fascism.
- clinozoisite — a monoclinic mineral, hydrous calcium aluminum silicate, a variety of epidote, dimorphous with zoisite.
- clintonomics — (used with a singular verb) the economic policies set forth by President Bill Clinton.
- cloddishness — The quality of being cloddish.
- cloisterless — a covered walk, especially in a religious institution, having an open arcade or colonnade usually opening onto a courtyard.
- clonic spasm — Pathology. a sudden, abnormal, involuntary muscular contraction, consisting of a continued muscular contraction (tonic spasm) or of a series of alternating muscular contractions and relaxations (clonic spasm)
- close stitch — buttonhole stitch.
- close-fisted — very careful with money; mean
- close-lipped — not talking or revealing much
- closed chain — any structural arrangement, used in the models and formulas of molecules, consisting of a chain of atoms that forms a closed geometric figure; ring
- closed union — a labor union in which admission of new members is restricted by rigid requirements.
- closefitting — fitting tightly, esp. in such a way as to show the contours of the body
- closegrained — having a fine, compact grain or texture
- closing date — The closing date for a competition or offer is the final date by which entries or applications must be received.
- closing time — Closing time is the time when something such as a shop, library, or pub closes and people have to leave.
- clothes-line — a strong, narrow rope, cord, wire, etc., usually stretched between two poles, posts, or buildings, on which clean laundry is hung to dry.
- clotheslined — Simple past tense and past participle of clothesline.
- clotheslines — Plural form of clothesline.
- cloudberries — Plural form of cloudberry.
- clovis point — flint projectile dating from the 10th millennium bc
- clownishness — The state of being clownish.
- co-extrusion — simultaneous extrusion of two or more different yet compatible metals or plastics through the same die.
- co-ownership — the fact or state of being one of the joint owners of something
- co-president — a person who shares the highest position in an organization with another person
- coalitionism — the principle of governing by coalition