12-letter words containing e, s, p, o
- ornithopters — Plural form of ornithopter.
- oropharynxes — Plural form of oropharynx.
- orthopaedics — (used with a singular verb) the medical specialty concerned with correction of deformities or functional impairments of the skeletal system, especially the extremities and the spine, and associated structures, as muscles and ligaments.
- orthopaedist — Alternative spelling of orthopedist.
- orthopterans — Plural form of orthopteran.
- orthopterist — someone who studies the Orthoptera
- orthopterous — belonging or pertaining to the Orthoptera, an order of insects, including the cockroaches, mantids, walking sticks, crickets, grasshoppers, and katydids, characterized by leathery forewings, membranous hind wings, and chewing mouthparts.
- oscilloscope — a device that gives a visual graph of amplitude versus time of a measured signal, as voltage or current.
- osmoreceptor — A sensory receptor, primarily found in the hypothalamus of most homeothermic organisms, that detects changes in osmotic pressure.
- osteoplastic — Surgery. pertaining to osteoplasty.
- osteoporosis — a disorder in which the bones become increasingly porous, brittle, and subject to fracture, owing to loss of calcium and other mineral components, sometimes resulting in pain, decreased height, and skeletal deformities: common in older persons, primarily postmenopausal women, but also associated with long-term steroid therapy and certain endocrine disorders.
- osteoporotic — of, relating to, or caused by osteoporosis.
- out of phase — in an unsynchronized way
- out of shape — person: unfit
- outside loop — a loop during which the back of the airplane is on the outer side of the curve described by the course of flight.
- outspreading — Present participle of outspread.
- over-precise — definitely or strictly stated, defined, or fixed: precise directions.
- over-promise — a declaration that something will or will not be done, given, etc., by one: unkept political promises.
- overcompress — to compress, squeeze or condense excessively
- overdevelops — Third-person singular simple present indicative form of overdevelop.
- overemphasis — excessive or undue emphasis.
- overexposure — excessive exposure, especially of photographic film or a sensitized plate to light rays.
- overlordship — a person who is lord over another or over other lords: to obey the will of one's sovereign and overlord.
- overoptimism — a disposition or tendency to look on the more favorable side of events or conditions and to expect the most favorable outcome.
- overoptimist — someone who is too optimistic
- overpersuade — to persuade (a person) against his or her inclination or intention: By threats and taunts they had overpersuaded him to steal the car.
- overpressure — pressure in excess of normal atmospheric pressure, as that caused by an explosion's shock wave or created in an accelerating airplane.
- overpurchase — to acquire by the payment of money or its equivalent; buy.
- overripeness — the state of being too ripe
- overseas cap — a soft, brimless military cap
- overshipment — an act or instance of shipping freight or cargo.
- oversimplify — make too simple
- overspending — the act or an instance of spending in excess of one's desires or what one can afford or is allocated
- oyster plant — salsify.
- pachydermous — any of the thick-skinned, nonruminant ungulates, as the elephant, hippopotamus, and rhinoceros.
- pacific rose — a large variety of eating apple from New Zealand, with sweet flesh
- pack of lies — false account
- packinghouse — a building where foodstuffs are packed
- paedobaptism — the baptism of infants
- paedobaptist — a person who baptizes infants
- paedodontics — the branch of dentistry that focuses on the care of children's teeth
- paedogenesis — sexual reproduction in an animal that retains its larval features
- pandanaceous — of, relating to, or belonging to the Pandanaceae, an Old World tropical family of monocotyledonous plants including the screw pines
- papoose-root — the blue cohosh. See under cohosh.
- paraglossate — having paraglossae
- parasol pine — stone pine (def 1).
- parasphenoid — a bone next to the sphenoid bone in the skull of some animals
- parish house — a building used by a church chiefly for administrative and social purposes.
- parlor house — (especially in the 19th and early 20th centuries) a brothel with a comfortable, often elaborately decorated parlor for the reception of clients.
- parochialise — to make parochial.