12-letter words containing o, p, t, i
- blotting-pad — an object to one side of which a piece of blotting paper is attached for blotting text handwritten in ink
- blue pointer — a large shark, Isuropsis mako, of Australian coastal waters, having a blue back and pointed snout
- boating trip — a trip or holiday in a boat such as a sailing boat or canal boat
- boatsmanship — seamanship as applied to boats, especially rowboats and motorboats.
- body politic — The body politic is all the people of a nation when they are considered as a complete political group.
- bolt upright — If someone is sitting or standing bolt upright, they are sitting or standing very straight.
- bomber pilot — the pilot of a bomber
- boot topping — the part of a ship's hull that is between the load line and the water line when the ship is not loaded
- branch point — Electricity. a point in an electric network at which three or more conductors meet.
- bubble point — the temperature at which bubbles just start to appear in a heated liquid mixture
- bullet point — A bullet point is one of a series of important items for discussion or action in a document, usually marked by a square or round symbol.
- bypass ratio — the ratio of the amount of air that bypasses the combustion chambers of an aircraft gas turbine to that passing through them
- camp bastion — a large British military base in Helmand province, Afghanistan, built in 2006
- camphorating — Present participle of camphorate.
- capacitation — to make capable; enable.
- capital cost — a cost incurred on the purchase of land, buildings, construction and equipment to be used in the production of goods or the rendering of services
- capital loss — A capital loss is a loss on investment property.
- capitol hill — the area around the Capitol in Washington, DC
- capitol peak — a mountain in W central Colorado, in the Elk range of the Rocky Mountains. 14,130 feet (4310 meters).
- capitulation — the act of capitulating
- capitulatory — the act of capitulating.
- captiousness — The state of being captious.
- cartographic — Of or pertaining to the making of maps.
- castile soap — a hard soap made from olive oil and sodium hydroxide
- catadioptric — involving a combination of reflecting and refracting components
- cataphoresis — electrophoresis
- catastrophic — Something that is catastrophic involves or causes a sudden terrible disaster.
- catch points — railway points designed to derail a train running back in the wrong direction to prevent collision with a following train
- ceratopsians — Plural form of ceratopsian.
- ceroplastics — the art of wax modelling
- 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
- change point — a point to which a foresight and backsight are taken in levelling; turning point
- charity shop — A charity shop is a shop that sells used goods cheaply and gives its profits to a charity.
- cheiloplasty — plastic surgery of the lip.
- chemotrophic — any organism that oxidizes inorganic or organic compounds as its principal energy source.
- chemotropism — the growth response of an organism, esp a plant, to a chemical stimulus
- chiropractic — Chiropractic is the treatment of injuries by pressing and moving people's joints, especially the spine.
- chiropractor — A chiropractor is a person who treats injuries by chiropractic.
- chiropterans — Plural form of chiropteran.
- chisel point — a nail or spike with the point formed by two flat inclined sides meeting at a sharp angle.
- chlorapatite — (mineral) A variety of apatite containing chloride instead of fluoride.
- christophany — an appearance or emergence of Christ following his crucifixion
- christophene — chayote.
- chromatophil — Also, chromatophilic, chromatophilous [kroh-muh-tof-uh-luh s] /ˌkroʊ məˈtɒf ə ləs/ (Show IPA). chromophil (def 1).
- chromatopsia — an irregularity in the ability to see colours properly
- chronotropic — affecting the rate or timing of a physiologic process, as the heart rate.
- chymotrypsin — a powerful proteolytic enzyme secreted from the pancreas in the form of chymotrypsinogen, being converted to the active form by trypsin
- chymotryptic — relating to chymotrypsin
- 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
- city company — (in Britain) a corporation that represents one of the historic trade guilds of London