12-letter words containing a, t, o, p, r
- odontography — a treatise regarding the teeth
- odontophoran — a member of the family Odontophora
- office party — a party or informal social gathering for all the employees in a particular organization or department
- offset paper — paper used in a printing method in which the impression is made onto an intermediate surface, such as a rubber blanket, which transfers it to the paper
- oil platform — An oil platform is a structure that is used when getting oil from the ground under the sea.
- on probation — under the supervision of a probation officer
- on sb's part — If you talk about a feeling or action on someone's part, you are referring to something that they feel or do.
- open slather — to spread or apply thickly: to slather butter on toast.
- open trailer — any dog that barks or bays on the trail of its quarry.
- open-hearted — unreserved, candid, or frank: open-hearted advice.
- 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.
- operatorless — Without an operator (person who operates); fully automatic.
- 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
- opinionators — Plural form of opinionator.
- opisthograph — a manuscript, parchment, or book having writing on both sides of the leaves.
- 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.
- organoleptic — perceived by a sense organ.
- organotropic — designating or of a substance or virus that travels predominantly to a specific organ
- orthographer — a person versed in orthography or spelling.
- 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.
- orthopterans — Plural form of orthopteran.
- outer planet — any of the four planets with orbits outside the orbit of Mars, namely, the planets Jupiter, Saturn, Uranus, and Neptune.
- outspreading — Present participle of outspread.
- overcapacity — capacity beyond what is normal, allowed, or desirable.
- overemphatic — excessive or undue emphasis.
- overpopulate — to fill with an excessive number of people, straining available resources and facilities: Expanding industry has overpopulated the western suburbs.
- overtime pay — a higher than normal rate of pay, for work done as overtime
- oyster plant — salsify.
- package tour — a planned tour in which one fee is charged for all expenses: offering package tours of the chateau country.
- packed tower — A packed tower is a tall distillation vessel which uses packing.
- packet radio — (communications, radio) The use of packet switched communications protocols in large networks (i.e not wireless LANs or Bluetooth) having wireless links to terminals at least. Packet radio is split into amateur packet radio (AX25) and General Packet Radio Service (GRPS).
- pain control — methods for the relief and management of pain
- paint roller — a roller of absorbent material, mounted on a handle, that is rolled in a trough of paint and then rolled over a flat surface to be painted.
- palatography — a technique for observing the position of the tongue in relation to the palate during articulation, especially by placing powder or dye on the palate and then noting the area from which it has been removed by the contact of the tongue with the palate during the production of a speech sound.
- palindromist — a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam, I'm Adam or Poor Dan is in a droop.
- palo cortado — a rich, dry sherry
- panchromatic — sensitive to all visible colors, as a photographic film.
- panel doctor — a doctor within a given area available for consultation by patients insured under the National Health Insurance Scheme
- pantaloonery — foolery; humorous entertainment
- pantisocracy — a community, social group, etc, in which all have rule and everyone is equal
- paper profit — an unrealized profit due to the appreciation of something owned but not yet sold.
- papoose-root — the blue cohosh. See under cohosh.
- paraglossate — having paraglossae