12-letter words containing p, o, i, r
- olla podrida — a spicy Spanish stew of sausage and other meat, chickpeas, and often tomatoes and other vegetables.
- ombrophilous — (of plants) tolerant of wet conditions
- omnipresence — present everywhere at the same time: the omnipresent God.
- on principle — an accepted or professed rule of action or conduct: a person of good moral principles.
- on probation — under the supervision of a probation officer
- on shipboard — on board a ship
- open circuit — a discontinuous circuit through which no current can flow.
- open primary — a direct primary election in which voters need not meet a test of party membership.
- open trailer — any dog that barks or bays on the trail of its quarry.
- open verdict — law: coroner's jury finding
- opera singer — a professional singer of opera
- opera window — a narrow, fixed window on each side of the rear passenger compartment of an automobile.
- operatically — of or relating to opera: operatic music.
- operationism — the doctrine that the meaning of a scientific term, concept, or proposition consists of the operation or operations performed in defining or demonstrating it.
- operatorship — (in the oil and gas industries) the right to operate a well, field, or other oil source.
- ophiolatrous — of, relating to, or practising snake-worshipping
- ophiomorphic — snakelike in form, or resembling the form of a snake
- opinionators — Plural form of opinionator.
- opinionnaire — A form containing a list of statements, each of which the members of a selected group are asked to endorse or reject; the purpose being to gather information for a survey.
- opisthograph — a manuscript, parchment, or book having writing on both sides of the leaves.
- opportunists — Plural form of opportunist.
- oppressional — Exhibiting or relating to oppression.
- oppressively — burdensome, unjustly harsh, or tyrannical: an oppressive king; oppressive laws.
- optic center — a point about ten percent above the exact center of a printed page or layout.
- optical grep — vgrep
- optoisolator — A device that transmits a signal optically between two isolated electronic circuits.
- optometrical — the practice or profession of examining the eyes, by means of suitable instruments or appliances, for defects in vision and eye disorders in order to prescribe corrective lenses or other appropriate treatment.
- optometrists — Plural form of optometrist.
- ordered pair — Mathematics. two quantities written in such a way as to indicate that one quantity precedes or is to be considered before the other, as (3, 4) indicates the Cartesian coordinates of a point in the plane.
- oreopithecus — a genus of fossil primate from the Miocene coal deposits of Italy, formerly considered to be a possible hominid.
- organoleptic — perceived by a sense organ.
- organotropic — designating or of a substance or virus that travels predominantly to a specific organ
- ornithomorph — the artistic representation of a bird
- ornithophily — pollination of flowers by birds
- ornithopters — Plural form of ornithopter.
- ornithoscopy — divination from the observation of birds
- orographical — relating to the study of mountains
- orthographic — of or relating to orthography.
- 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.
- orthopedical — (American spelling) Alternative form of orthopaedical.
- orthopterist — someone who studies the Orthoptera
- orthopteroid — (zoology) Any of the insects historically included in the order Orthoptera, including the cockroaches, earwigs, praying mantises, etc.
- orthotropism — Botany. orthotropic tendency or growth.
- oscillograph — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- 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 print — of, for, or comprising newspapers and magazines: print media.
- out-of-print — being no longer published; no longer printed or reprinted: a bookstore specializing in out-of-print books.
- outcroppings — Plural form of outcropping.