12-letter words containing a, p, o, s, t, r
- boot-scraper — a contraption consisting of an upright metal shape formerly placed outside some houses to enable people to scrape the mud from their boots before going in
- breastplough — a plough driven by the worker's breast, often used to pare turf
- bypass ratio — the ratio of the amount of air that bypasses the combustion chambers of an aircraft gas turbine to that passing through them
- cataphoreses — Plural form of cataphoresis.
- cataphoresis — electrophoresis
- catastrophal — (rare) Catastrophic.
- catastrophes — Plural form of catastrophe.
- catastrophic — Something that is catastrophic involves or causes a sudden terrible disaster.
- cattleperson — Someone who works with, or rears cattle.
- ceratopsians — Plural form of ceratopsian.
- ceroplastics — the art of wax modelling
- chapter stop — any of several markers placed at intervals on a DVD film, enabling the viewer to find and select particular scenes
- chapterhouse — the building attached to a cathedral, collegiate church, or religious house in which the chapter meets
- charity shop — A charity shop is a shop that sells used goods cheaply and gives its profits to a charity.
- chiropterans — Plural form of chiropteran.
- chloroplasts — Plural form of chloroplast.
- choux pastry — a very light pastry made with eggs, used for eclairs, etc
- christophany — an appearance or emergence of Christ following his crucifixion
- chromatopsia — an irregularity in the ability to see colours properly
- chromoplasts — Plural form of chromoplast.
- coleopterans — Plural form of coleopteran.
- comparatists — Plural form of comparatist.
- comparatives — Plural form of comparative.
- compartments — Plural form of compartment.
- compensatory — Compensatory payments involve money paid as compensation.
- compulsatory — compulsory
- conspiracist — a person who believes in or supports a conspiracy theory.
- conspiration — a conspiracy
- conspirators — Plural form of conspirator.
- conspiratory — the act of conspiring.
- contrapposto — (in the visual arts) a curving or asymmetrical arrangement of the human figure with the shoulders, hips, and legs in different planes
- contraptions — Plural form of contraption.
- cooperations — an act or instance of working or acting together for a common purpose or benefit; joint action.
- cooperatives — Plural form of cooperative.
- copperfasten — (transitive, historical) To protect the timbers [of a ship] with plates of copper secured with copper nails or bolts.
- copperplates — Plural form of copperplate.
- coprophagist — a person who eats excrement
- corporations — Plural form of corporation.
- corporealist — a materialist
- counterpanes — Plural form of counterpane.
- counterparts — a person or thing closely resembling another, especially in function: Our president is the counterpart of your prime minister.
- counterpleas — Plural form of counterplea.
- counterscarp — the outer side of the ditch of a fort
- counterstamp — a stamp added to a stamped paper or document as a qualifying mark.
- craftspeople — Craftspeople are people who make things skilfully with their hands.
- craftsperson — an artisan
- cranioplasty — Surgical repair of a defect or deformity in the skull.
- crosspatches — Plural form of crosspatch.
- cryptogamist — a botanist specializing in the study of cryptogams
- cryptogamous — Of or pertaining to the cryptogams.