10-letter words containing y, c, o
- cessionary — a person to whom something is transferred; assignee; grantee
- ceylon tea — a tea from Ceylon (now Sri Lanka)
- chaetotaxy — the arrangement of bristles on the exoskeleton of an insect.
- chalcedony — a microcrystalline often greyish form of quartz with crystals arranged in parallel fibres: a gemstone. Formula: SiO2
- chardonnay — a white grape originally grown in the Burgundy region of France, and now throughout the wine-producing world
- charophyte — any green algae of the class Charophyceae (or group Charophyta), comprising the stoneworts.
- chasmogamy — the production of flowers that open, so as to expose the reproductive organs and allow cross-pollination
- cheboksary — a port in W central Russia on the River Volga: capital of the Chuvash Republic. Pop: 446 000 (2005 est)
- chemonasty — the nastic movement of a plant in response to a chemical stimulus
- chernovtsy — a city in Ukraine on the Prut River: formerly under Polish, Austro-Hungarian, and Romanian rule; part of the Soviet Union (1947–91). Pop: 237 000 (2005 est)
- cherry-bob — a pair of cherries joined at the end of their stems.
- chimneypot — a short pipe on the top of a chimney, which increases the draught and directs the smoke upwards
- chirognomy — the study of the hand in order to discern a person's nature or future events
- chiromancy — palmistry
- chlorinity — the amount of chlorine present in water, esp sea-water
- chlorodyne — a drug, containing chloroform among other ingredients, with sedative, narcotic and pain-relieving properties
- chlorophyl — Alternative form of chlorophyll.
- choanocyte — any of the flagellated cells in sponges that maintain a flow of water through the body. A collar of protoplasm surrounds the base of the flagellum
- chocolatey — a preparation of the seeds of cacao, roasted, husked, and ground, often sweetened and flavored, as with vanilla.
- chokeberry — any of various North American rosaceous shrubs of the genus Aronia
- cholecysts — Plural form of cholecyst.
- chomophyte — any plant that grows on rocky ledges or in fissures and crevices
- chordotomy — an operation to paralyse nerve tracts in the spinal chord in order to relieve pain associated with certain conditions
- choreology — the method of writing down the signs and characters that indicate movements in dance
- chorus boy — a male singer or dancer of the chorus of a musical comedy, vaudeville show, etc.
- chroma key — an electronic special-effects system for combining a desired background with live foreground action.
- chromatype — a procedure in photography that uses photographic paper that is made reactive to light by the use of a salt of chromium
- chronicity — constant; habitual; inveterate: a chronic liar.
- chronology — The chronology of a series of past events is the times at which they happened in the order in which they happened.
- chrysocale — a copper alloy containing zinc and lead.
- chrysolite — a yellowish-green gem derived chiefly from varieties of olivine
- chrysophan — a glucoside that is bitter to the taste and yellow in colour
- chrysostom — Saint John. ?345–407 ad, Greek patriarch; archbishop of Constantinople (398–404). Feast day: Sept 13 or Nov 13
- chrysotile — a green, grey, or white fibrous mineral, a variety of serpentine, that is an important source of commercial asbestos. Formula: Mg3Si2O5(OH)4
- chylaceous — of or resembling chyle.
- chyloderma — (medicine) swelling of the scrotum resulting from chronic lymphatic obstruction.
- cladophyll — a green, flattened branch arising from the axil of a leaf, with the shape and functions of a foliage leaf
- clapperboy — a boy who operates a clapper
- clappy-doo — a large black mussel
- clay court — a tennis court with a playing surface topped by a layer of crushed shale, brick, or stone
- clay flour — dried and pulverized clay.
- clay stone — argillite.
- claymation — the techniques of animation applied to clay models
- claystones — argillite.
- clearstory — clerestory
- clerestory — a row of windows in the upper part of the wall of a church that divides the nave from the aisle, set above the aisle roof
- cleromancy — a divination involving dice-throwing or lot-casting
- clonotypes — Plural form of clonotype.
- cloth yard — a medieval unit of measure for cloth, fixed at 37 inches by Edward VI of England: also used as a length for longbow arrows
- cloudberry — a creeping Eurasian herbaceous rosaceous plant, Rubus chamaemorus, with white flowers and orange berry-like fruits (drupelets)