12-letter words containing o, p, a, c
- phonemically — of or relating to phonemes: a phonemic system.
- phonetic law — a statement of some regular pattern of sound change in a specific language, as Grimm's law or Verner's law.
- phonetically — Also, phonetical. of or relating to speech sounds, their production, or their transcription in written symbols.
- phonocamptic — possessing the property of reflecting sound or producing an echo
- phonographic — of, relating to, or characteristic of a phonograph.
- phonological — relating to study of speech sounds
- phonotactics — the patterns in which the phonemes of a language may combine to form sequences.
- phosphatidic — of or relating to a phosphatide
- photoactinic — emitting radiation having the chemical effects of light and ultraviolet rays, as on a photographic film.
- photocathode — a cathode, typically of a cesium or sodium compound, having the property of emitting electrons when activated by light or other radiation.
- photodynamic — the science dealing with light and its effects on living organisms.
- photoelastic — displaying photoelasticity; of or relating to photoelasticity
- photographic — of or relating to photography.
- photomachine — a machine that prints copies of digital photographs
- photonuclear — of, relating to, or caused by the collision of high-energy photons with the nucleus of an atom.
- photovoltaic — of or relating to the photovoltaic effect.
- phycoxanthin — a yellow pigment found in brown seaweeds and types of algae
- physogastric — pertaining to the swollen, membranous abdomen of certain insects, especially termite and ant queens.
- phytoclimate — the climate of a small area, as of confined spaces such as caves or houses (cryptoclimate) of plant communities, wooded areas, etc. (phytoclimate) or of urban communities, which may be different from that in the general region.
- picornavirus — any of a group of small, RNA-containing viruses of the family Picornaviridae, infectious to humans and other animals, and including the poliovirus and the rhinoviruses that cause the common cold.
- picrocarmine — a red powder containing carmine and picric acid which is used in staining processes
- pictographic — a pictorial sign or symbol.
- pictorialism — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- pictorialist — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- pictorialize — to make pictorial; illustrate or represent with or as if with pictures.
- piece of ass — a separate or limited portion or quantity of something: a piece of land; a piece of chocolate.
- pilot jacket — a type of leather jacket associated with U.S. Army pilots in World War II
- pindaric ode — an ode consisting of several units, each of which is composed of a strophe and an antistrophe of identical form followed by a contrasting epode.
- pinealectomy — a surgical operation to remove the pineal gland
- ping command — ping
- pipe tobacco — tobacco suitable for use in a tobacco pipe
- pirate coast — an independent federation in E Arabia, formed in 1971, now comprising seven emirates on the S coast (formerly, Pirate Coast or Trucial Coast) of the Persian Gulf, formerly under British protection: Abu Dhabi, Dubai, Sharjah, Ajman, Umm al-Qaiwain, Ras al-Khaimah (joined 1972), and Fujairah. About 32,300 sq. mi. (83,657 sq. km). Capital: Abu Dhabi. Abbreviation: U.A.E.
- place-holder — Mathematics, Logic. a symbol in an expression that may be replaced by the name of any element of the set.
- placentation — Anatomy, Zoology. the formation of a placenta. the manner of placement or construction of a placenta.
- placentiform — shaped like a placenta, with a flat rounded form
- placentology — the scientific study of the placenta
- plagioclimax — the climax stage of a community, influenced by man or some other outside factor
- plagiotropic — growing more or less divergent from the vertical.
- plainclothes — Plainclothes police officers wear ordinary clothes instead of a police uniform.
- plano-convex — pertaining to or noting a lens that is plane on one side and convex on the other.
- planoconcave — pertaining to or noting a lens that is plane on one side and concave on the other.
- planographic — the art or technique of printing from a flat surface directly or by offset.
- plasma torch — an electrical device for converting a gas into a plasma, used for melting metal
- plastic bomb — a bomb made of plastic explosive.
- plastic flow — deformation of a material that remains rigid under stresses of less than a certain intensity but that behaves under severer stresses approximately as a Newtonian fluid.
- plastic foam — expanded plastic.
- plastocyanin — a blue protein found in green plants and in some bacteria
- platanaceous — relating to the family Platanaceae
- platform car — a railroad freight car having no enclosing sides or top; a flatcar.
- platonically — of, relating to, or characteristic of Plato or his doctrines: the Platonic philosophy of ideal forms.