12-letter words containing r, e, o, i
- canyoneering — (US) Canyoning, a hybrid outdoor sport involving the traversal of river canyons.
- cape comorin — a headland at the southernmost point of India, in Tamil Nadu state
- capricornean — born under or characteristic of Capricorn
- carbocholine — carbachol.
- carbon fiber — a very strong, lightweight synthetic fiber used in protective clothing, spacecraft components, racing shells, etc.
- carbon fibre — a black silky thread of pure carbon made by heating and stretching textile fibres and used because of its lightness and strength at high temperatures for reinforcing resins, ceramics, and metals, esp in turbine blades and for fishing rods
- carbonatites — Plural form of carbonatite.
- carcinogenic — A substance that is carcinogenic is likely to cause cancer.
- cardioactive — of or relating to a drug or other substance affecting the function of the heart.
- cardiomegaly — abnormal enlargement of the heart.
- cardioplegia — deliberate arrest of the action of the heart, as by hypothermia or the injection of chemicals, to enable complex heart surgery to be carried out
- carillonneur — a person who plays a carillon
- carriage dog — Dalmatian (sense 4)
- case history — A person's case history is the record of past events or problems that have affected them, especially their medical history.
- cataphoresis — electrophoresis
- categorially — in a manner relating to or involving categories
- categoricity — The quality of being categorical.
- categorising — to arrange in categories or classes; classify.
- categorizing — Present participle of categorize.
- cater-cousin — a close friend
- cathiodermie — a beauty treatment for the skin, which involves using electrotherapy
- cauliflowers — Plural form of cauliflower.
- cavo-relievo — a relief sculpture in which the highest point in the carving is below the level of the original surface
- cd-rom drive — A CD-ROM drive is the device that you use with a computer to play CD-ROMs.
- cecil rhodes — Cecil John, 1853–1902, English colonial capitalist and government administrator in southern Africa.
- ceiling rose — decorative plaster centrepiece
- celebrations — Plural form of celebration.
- celtic cross — a Latin cross with a broad ring surrounding the point of intersection
- censoriously — In a censorious manner.
- centimorgans — Plural form of centimorgan.
- centroclinal — of, relating to, or designating a rock formation in which the strata slope down and in towards a central point or area
- centrolinead — a drafting instrument for drawing lines converging on a vanishing point outside the drawing.
- centrolineal — Of lines, converging to a centre.
- centuriation — the process or act of dividing land into centuries or equal areas undertaken by the Romans
- ceratopsians — Plural form of ceratopsian.
- cerebrations — Plural form of cerebration.
- cerebrosides — Plural form of cerebroside.
- cerebrotonia — a personality type characterized by restraint, alertness, and an intellectual approach to life: said to be correlated with an ectomorph body type
- cerebrotonic — relating to or resembling a personality type characterized by shyness, introspection, and emotional restraint, and often associated with an ectomorphic physique
- ceremonially — of, relating to, or characterized by ceremony; formal; ritual: a ceremonial occasion.
- ceroplastics — the art of wax modelling
- cerotic acid — white insoluble odourless wax
- cervicectomy — (medicine) Surgical removal of the cervix.
- chaetiferous — having bristles
- chain locker — a compartment where the chain or cable of an anchor is stowed when the anchor is raised.
- chain smoker — person: smokes heavily
- chain-smoker — A chain-smoker is a person who chain-smokes.
- chairpersons — Plural form of chairperson.
- chalcopyrite — a widely distributed yellow mineral consisting of a sulphide of copper and iron in tetragonal crystalline form: the principal ore of copper. Formula: CuFeS2
- chalicothere — any of various very large extinct Tertiary horselike perissodactyl mammals that had clawed feet but otherwise resembled titanotheres