16-letter words containing a, p, t, e
- primary election — primary (def 15a).
- primary electron — in thermionics, any of the electrons falling on a body, distinguished from those emitted by it
- primary meristem — primary tissue derived from an apical meristem.
- prince's feather — a tall, showy plant, Amaranthus hybridus erythrostachys, of the amaranth family, having reddish foliage and thick spikes of small, red flowers.
- prince's-feather — a tall, showy plant, Amaranthus hybridus erythrostachys, of the amaranth family, having reddish foliage and thick spikes of small, red flowers.
- principal rafter — a diagonal member of a roof principal, usually forming part of a truss and supporting the purlins on which the common rafters rest.
- printer's reader — a person employed to read proofs and indicate errors
- private judgment — personal opinion formed independently of the expressed position of an institution, as in matters of religion or politics.
- private language — a language that is not merely secret or accidentally limited to one user, but that cannot in principle be communicated to another
- private practice — the practice of one's profession as an independent rather than as an employee.
- private property — land or belongings owned by a person or group and kept for their exclusive use
- private viewdata — an interactive video text system with restricted access
- private-line car — a freight car owned by a company other than a railroad but operated over the tracks of railroads.
- privet andromeda — a spreading shrub, Lyonia ligustrina, of the eastern U.S., having leafless, white flowers in terminal clusters.
- privileged altar — an altar at which a plenary indulgence for a departed soul may be granted upon celebration of a Mass.
- processing plant — a factory where raw materials are treated or prepared by a special method, esp one where food is treated in order to preserve it
- proenvironmental — the aggregate of surrounding things, conditions, or influences; surroundings; milieu.
- program director — a chief executive responsible for selecting and scheduling programs.
- programme editor — someone responsible for editing, overseeing and selecting the content of radio or television programmes
- progress payment — an instalment of a larger payment made to a contractor for work carried out up to a specified stage of the job
- project guardian — (project, security) A project which grew out of the ARPA support for Multics and the sale of Multics systems to the US Air Force. The USAF wanted a system that could be used to handle more than one security classification of data at a time. They contracted with Honeywell and MITRE Corporation to figure out how to do this. Project Guardian led to the creation of the Access Isolation Mechanism, the forerunner of the B2 labeling and star property support in Multics. The DoD Orange Book was influenced by the experience in building secure systems gained in Project Guardian.
- project planning — project management
- projection paper — sensitized paper for recording a projected image.
- projective plane — (mathematics) The space of equivalence classes of vectors under non-zero scalar multiplication. Elements are sets of the form {kv: k != 0, k scalar, v != O, v a vector} where O is the origin. v is a representative member of this equivalence class. The projective plane of a vector space is the collection of its 1-dimensional subspaces. The properties of the vector space induce a topology and notions of smoothness on the projective plane. A projective plane is in no meaningful sense a plane and would therefore be (but isn't) better described as a "projective space".
- prolonged-action — sustained-release.
- promotional code — A promotional code is a code offered by retailers to customers who can use it to receive a discounted price when buying products online.
- proof of postage — a document, such as a receipt, etc, that proves that you have posted or mailed something
- proper adjective — an adjective formed from a proper noun, as American from America.
- property company — a business that makes money by buying, selling, and renting out land and houses
- proprietary name — a name of a product or service that is protected by a patent, copyright, or trademark and cannot be used by another party for commercial purposes without permission of the registered owner or licensee.
- prosecution case — the case brought against someone by a legal authority
- protection ratio — the minimum acceptable ratio between the amplitudes of a wanted radio or television broadcast signal and any interfering signal
- protestant ethic — work ethic.
- provost sergeant — the senior noncommissioned officer of a prison or other confinement facility whose chief duty is the supervision of prisoners and of the military police unit.
- proxima centauri — the nearest star to the sun at a distance of 4.3 light-years, part of the Alpha Centauri triple-star system located in the constellation Centaurus.
- proxime accessit — the person coming next after the winner in a competitive examination or an academic prize giving; runner-up
- pseudo-patriotic — of, like, suitable for, or characteristic of a patriot.
- pseudo-political — of, relating to, or concerned with politics: political writers.
- pseudo-realistic — interested in, concerned with, or based on what is real or practical: a realistic estimate of costs; a realistic planner.
- pseudo-spiritual — of, relating to, or consisting of spirit; incorporeal.
- pseudocopulation — pollination of plants, esp orchids, by male insects while attempting to mate with flowers that resemble the female insect
- pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- pseudoperipteral — having a freestanding colonnade at each end, with engaged columns at the sides.
- psychic distance — the degree of emotional detachment maintained toward a person, group of people, event, etc.
- psychogeriatrics — the psychology of old age.
- ptolemaic system — a system elaborated by Ptolemy and subsequently modified by others, according to which the earth was the fixed center of the universe, with the heavenly bodies moving about it.
- public relations — (used with a plural verb) the actions of a corporation, store, government, individual, etc., in promoting goodwill between itself and the public, the community, employees, customers, etc.
- publication date — the date on which a book or periodical is or is planned to be published.
- publicity agency — an advertising agency; a firm that gets publicity for people or products
- pulmonary artery — an artery conveying venous blood from the right ventricle of the heart to the lungs.