12-letter words containing a, c, s, e, o
- pleiochasium — a flowering system in which several buds come out at the same time
- plumulaceous — having the texture of down.
- pneumatocyst — the cavity of a pneumatophore.
- poeticalness — the characteristic of being poetical
- pole compass — (formerly) a ship's compass elevated on a wooden pole to isolate it as much as possible from local magnetism.
- police state — a nation in which the police, especially a secret police, summarily suppresses any social, economic, or political act that conflicts with governmental policy.
- policymakers — a person responsible for making policy, especially in government.
- politicaster — an ill-suited or disliked politician
- polychaetous — of or relating to the genus Polychaeta
- pontificates — the office or term of office of a pontiff.
- porcelainous — made of or resembling porcelain
- porcelaneous — a strong, vitreous, translucent ceramic material, biscuit-fired at a low temperature, the glaze then fired at a very high temperature.
- porcellanise — to bake into porcelain
- post-nuclear — pertaining to or involving atomic weapons: nuclear war.
- postaccident — occurring after an accident
- postcardlike — (of a scene) resembling a postcard
- postcardware — Shareware that borders on freeware, in that the author requests only that satisfied users send a postcard of their home town or something. (This practice, silly as it might seem, serves to remind users that they are otherwise getting something for nothing, and may also be psychologically related to real estate "sales" in which $1 changes hands just to keep the transaction from being a gift.)
- postfracture — taking place after a fracture
- praxinoscope — a toy in which a sequence of images, depicted on the inner surface of a cylinder and reflected in a series of mirrors, gives the illusion of motion as the cylinder rotates
- pre-socratic — of or relating to the philosophers or philosophical systems of the period before the Socratic period.
- precancerous — showing pathological changes that may be preliminary to malignancy.
- precariously — dependent on circumstances beyond one's control; uncertain; unstable; insecure: a precarious livelihood.
- precessional — the act or fact of preceding; precedence.
- primulaceous — belonging to the plant family Primulaceae.
- problematics — problems or difficulties in a particular situation or subject
- proboscidate — having a proboscis.
- proboscidean — pertaining to or resembling a proboscis.
- process data — data processing
- processional — of, relating to, or characteristic of a procession.
- proconsulate — the office or term of office of a proconsul.
- producer gas — a mixture of carbon monoxide and nitrogen produced by passing air over hot coke, used mainly as a fuel
- promuscidate — shaped like a proboscis
- proper class — a class which cannot itself be a member of other classes
- proscribable — to denounce or condemn (a thing) as dangerous or harmful; prohibit.
- prosectorial — characteristic of a prosector
- prosecutable — Law. to institute legal proceedings against (a person). to seek to enforce or obtain by legal process. to conduct criminal proceedings in court against.
- pseudocereal — any of several plants, as buckwheat and quinoa, that produce fruits and seeds used as flour but are not of the grass family.
- pseudoscalar — a scalar quantity that changes sign when the sense of the orientation of the coordinate system is changed.
- psychoactive — of or relating to a substance having a profound or significant effect on mental processes: a psychoactive drug.
- psychobabble — writing or talk using jargon from psychiatry or psychotherapy without particular accuracy or relevance.
- psychosexual — of or relating to the relationship of psychological and sexual phenomena.
- pterocarpous — having winged fruit.
- quindecagons — Plural form of quindecagon.
- rachiotomies — Plural form of rachiotomy.
- radio source — a cosmic object or phenomenon, as a galaxy, pulsar, quasar, or the remnant of a supernova or of a galactic collision, that emits radio waves.
- ramentaceous — resembling or covered with ramenta.
- recessionary — of, relating to, or causing recession, especially economic recession: recessionary market pressures.
- reciprocates — to give, feel, etc., in return.
- recompensate — to recompense for something: They gave him ten dollars to compensate him for his trouble.
- reconsecrate — to make or declare sacred; set apart or dedicate to the service of a deity: to consecrate a new church building.