23-letter words containing a, r, o, d
- pentagonal dodecahedron — pyritohedron.
- percentage distribution — a frequency distribution is which individual frequencies are shown as a percentage of the total frequencies
- performance-related pay — salary based on individual assessment
- peroxymonosulfuric acid — persulfuric acid (def 1).
- pest control department — the local government department responsible for controlling such pests as rats and mice
- philadelphia pepper pot — pepper pot (def 1).
- photoelectric magnitude — the magnitude of a star determined using a photometer plus a filter to select light or other radiation of the desired wavelength
- physical memory address — physical address
- plan position indicator — a radarscope on which an object reflecting radar waves shows its bearing and distance from the radar detector by causing a spot of light to appear on a screen that represents a map of the area around the detector. Abbreviation: PPI.
- polybrominated biphenyl — PBB.
- portable object adapter — (architecture) (POA) Part of the CORBA architecture.
- positive discrimination — special opportunities
- postcode discrimination — discrimination on the basis of the area where someone lives, with relation to employment, credit rating, etc
- potassium acid tartrate — cream of tartar.
- precipitation hardening — a process in which alloys are strengthened by the formation, in their lattice, of a fine dispersion of one component when the metal is quenched from a high temperature and aged at an intermediate temperature
- preferred provider plan — A preferred provider plan is a health insurance plan in the U.S. written by an organization of hospitals and physicians who provide services to clients of a particular insurance company.
- presidential government — a system of government in which the powers of the president are constitutionally separate from those of the legislature.
- private limited company — a company whose shares can be bought by the public
- process hazard analysis — Process hazard analysis is calculating what might be a hazard in a process, how likely it is to happen, and what should be done if someone or something is exposed to this hazard.
- product differentiation — the real or illusory distinction between competing products in a market
- productivity bargaining — the process of reaching an agreement (productivity agreement) through collective bargaining whereby the employees of an organization agree to changes which are intended to improve productivity in return for an increase in pay or other benefits
- professional misconduct — a violation of the rules or boundaries set by the governing body of a profession
- profit and loss account — income account (def 2).
- program design language — Any of a large class of formal and profoundly useless pseudo-languages in which management forces one to design programs. Too often, management expects PDL descriptions to be maintained in parallel with the code, imposing massive overhead of little or no benefit. See also flow chart.
- programmer brain damage — (humour) (PBD) A classification of a bug which was obviously introduced by an incompetent or short-sighted programmer. Compare UBD. See also brain-damaged.
- psychomotor retardation — a generalized slowing of psychological and physical activity, frequently occurring as a symptom of severe depression.
- put the record straight — to correct an error or misunderstanding
- quantum electrodynamics — the quantum field theory that deals with the electromagnetic field and its interaction with electrons and positrons. Abbreviation: QED.
- quantum flavourdynamics — a gauge theory of the electromagnetic and weak interactions
- queen charlotte islands — a group of about 150 islands off the W coast of Canada: part of British Columbia. Pop: about 6000 (latest est). Area: 9596 sq km (3705 sq miles)
- quod erat demonstrandum — (at the conclusion of a proof, esp of a theorem in Euclidean geometry) which was to be proved
- quote chapter and verse — [by analogy with the mainstream phrase] To cite a relevant excerpt from an appropriate bible. "I don't care if "rn" gets it wrong; "Followup-To: poster" is explicitly permitted by RFC 1036. I'll quote chapter and verse if you don't believe me." See also legalese, language lawyer, RTFS (sense 2).
- radio direction finding — the act or process of finding the direction to a radio source by comparing the signal strength of antennae pointing in different directions
- random number generator — a piece of computer software used to create a sequence of random numbers
- rank outsider/outsiders — If one of the people in a competition is described as a rank outsider, they are considered to have very little chance of winning.
- rate-of-climb indicator — a flight instrument that indicates the rate of climb or descent of an aircraft.
- real simple syndication — (spelling) Illiterate form of Really Simple Syndication.
- rectangular coordinates — Usually, rectangular coordinates. either of two Cartesian coordinates in which the axes meet at right angles.
- refinery waste disposal — Refinery waste disposal is the system for dealing with waste materials, especially hazardous ones, in a refinery.
- refuse disposal service — a place or facility where rubbish and waste can be disposed
- relativity of knowledge — the theory that all knowledge is relative to the mind, or that things can be known only through their effects on the mind, and that consequently there can be no knowledge of reality as it is in itself
- route of administration — A route of administration is the means by which a drug or agent enters the body, such as by mouth or by injection.
- russian orthodox church — the national Church of Russia, constituting a branch of the Eastern Church, presided over by the Patriarch of Moscow
- sb doesn't miss a trick — If you say that someone does not miss a trick, you mean that they always know what is happening and take advantage of every situation.
- school (crossing) guard — a person, either an adult or an older student, whose duty it is to help children cross streets near schools safely
- secondary modern school — (formerly) a secondary school offering a more technical or practical and less academic education than a grammar school
- secondary seventh chord — a chord formed by superposition of three thirds upon any degree of the scale except the dominant.
- secondary sex character — any of a number of manifestations, as development of breasts or beard, muscularity, distribution of fat tissue, and change of pitch in voice, specific to each sex and incipient at puberty but not essential to reproduction.
- security association id — (networking) (SAID) A 32-bit field added to packet headers for encryption and authentication in the proposed Internet Protocol Version 6.
- self-addressed envelope — addressed to self