12-letter words containing o, p, a, c
- aristophanic — 448?–385? b.c, Athenian comic dramatist.
- arthropathic — disease of the joints.
- arthroscopes — Plural form of arthroscope.
- arthroscopic — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- aspect ratio — the ratio of width to height of the picture on a television or cinema screen
- asphalt rock — a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.
- astigmoscope — astigmatoscope.
- astrocompass — a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- asymptomatic — If someone with a disease is asymptomatic, it means that they do not show any symptoms of the disease.
- asymptotical — of or relating to an asymptote.
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- atomic power — nuclear power.
- atychiphobia — (rare) The fear of failure.
- auspiciously — promising success; propitious; opportune; favorable: an auspicious occasion.
- autocomplete — a feature of a word processor, email program, web browser, etc., that automatically predicts the remaining characters in a word or phrase based on what has been typed or input before: If you supply the information, your browser will be able to use autocomplete to fill out online forms.
- autohypnotic — Of or pertaining to autohypnosis; self-hypnotizing.
- autoptically — in an autoptical manner
- azcapotzalco — a city in central Mexico: suburb of Mexico City; a cultural center during the pre-Columbian period.
- bachelor pad — a flat in which a bachelor lives
- bachelorship — the state of being a bachelor; bachelorhood
- back-stopped — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- backstopping — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- barge couple — either of a pair of outside rafters along the gable end of a roof
- baroreceptor — a collection of sensory nerve endings, principally in the carotid sinuses and the aortic arch, that monitor blood pressure changes in the body
- basidiocarps — Plural form of basidiocarp.
- beam compass — an instrument for drawing large circles or arcs, consisting of a horizontal beam along which two vertical legs slide
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- bishop's-cap — any of a genus (Mitella) of small woodland plants of the saxifrage family, with two-lobed seedcases shaped like a bishop's hat
- black copper — a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.
- black poplar — a Eurasian tree, Populus nigra
- black powder — gunpowder as used in sports involving modern muzzleloading firearms
- black sapote — a tropical American tree, Diospyros digyna, related to the persimmon, having sweet, edible, green fruit that turns black when ripe.
- bobbery pack — a mixed pack of hunting dogs, often not belonging to any of the hound breeds
- 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
- branch depot — one of a several depots receiving stock from the same central supplier
- branch point — Electricity. a point in an electric network at which three or more conductors meet.
- bronchospasm — an abnormal contraction of the bronchi resulting in restriction of the airway
- cacophonical — cacophonous
- cacophonious — cacophonous
- caesalpinoid — of, relating to, or belonging to the Caesalpinoideae, a mainly tropical subfamily of leguminous plants that have irregular flowers: includes carob, senna, brazil, cassia, and poinciana
- caloreceptor — a receptor stimulated by heat.
- camelopardus — a faint extensive constellation in the N hemisphere close to Ursa Major and Cassiopeia
- camera phone — A camera phone is a mobile phone that can also take photographs.
- camerapeople — a person who operates a camera, especially a movie or TV camera.
- cameraperson — a camera operator
- camp bastion — a large British military base in Helmand province, Afghanistan, built in 2006
- camphor ball — mothball
- camphor tree — a lauraceous evergreen E Asian tree, Cinnamomum camphora, whose aromatic wood yields camphor
- camphorating — Present participle of camphorate.