22-letter words containing p, e, t, i, f
- positive reinforcement — encouragement
- post office department — former name of United States Postal Service.
- potassium ferricyanide — a bright-red, crystalline, water-soluble, poisonous solid, K 3 Fe(CN) 6 , used chiefly in the manufacture of pigments, as Prussian blue, and of paper, especially blueprint paper.
- potassium ferrocyanide — a lemon-yellow, crystalline, water-soluble solid, K 4 Fe(CN) 6 ⋅3H 2 O, used chiefly in casehardening alloys having an iron base and in dyeing wool and silk.
- practice makes perfect — If you say 'practice makes perfect', you mean that it is possible to learn something or develop a skill if you practise enough. People often say this to encourage someone to keep practising.
- pressure relief system — A pressure relief system is a device or method for reducing pressure in vessels, stages, or equipment when pressure has increased above a particular limit.
- primary rate interface — (PRI) A type of ISDN connection. In North America and Japan, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Elsewhere the PRI has 31 user channels, usually divided into 30 B channels and 1 D channel and is based on the E1 interface. PRI is typically used for connections such as one between a PBX (private branch exchange, a telephone exchange operated by the customer of a telephone company) and a CO (central office, of the telephone company) or IXC (inter exchange carrier, a long distance telephone company).
- primate of all england — a title of the archbishop of Canterbury.
- protestant reformation — reformation (def 2).
- public domain software — public domain
- put the frighteners on — to intimidate
- rapid deployment force — a U.S. military organization consisting of one Marine division and four Army divisions, established in 1979 to respond quickly to any distant threat to national interests.
- reproduction furniture — furniture that is made in an imitation or copy of a past style
- sapir-whorf hypothesis — a theory developed by Edward Sapir and Benjamin Lee Whorf that states that the structure of a language determines or greatly influences the modes of thought and behavior characteristic of the culture in which it is spoken.
- satisfiability problem — A problem used as an example in complexity theory. It can be stated thus: Given a Boolean expression E, decide if there is some assignment to the variables in E such that E is true. A Boolean expression is composed of Boolean variables, (logical) negation (NOT), (logical) conjunction (AND) and parentheses for grouping. The satisfiability problem was the first problem to be proved to be NP-complete (by Cook).
- south african republic — former name of Transvaal.
- specific heat capacity — the heat required to raise unit mass of a substance by unit temperature interval under specified conditions, such as constant pressure: usually measured in joules per kelvin per kilogram
- speckle interferometry — a photographic technique for clarifying the telescopic images of a star by taking short exposures of the electronic images of the star's speckle pattern and extrapolating properties of the starlight to create a more accurate composite image.
- stereospecific polymer — an organic polymer in which the steric arrangements of groups on asymmetric carbon atoms occur in a regular sequence
- subornation of perjury — the offense of bribing or otherwise persuading another to commit perjury.
- temporary life annuity — an annuity that ceases upon the death of the annuitant or upon the expiration of a period of time, whichever occurs first.
- the caring professions — professions such as nursing and social work that are involved with looking after people who are ill or who need help in coping with their lives
- the medical profession — the occupation of working as a doctor of medicine
- the point of no return — If you say that you have reached the point of no return, you mean that you now have to continue with what you are doing and it is too late to stop.
- the tip of the iceberg — If you say that a problem is the tip of the iceberg, you mean that it is one small part of a much larger problem.
- the top of the morning — a morning greeting regarded as characteristic of Irishmen
- to fall to bits/pieces — To fall to pieces, or in British English to fall to bits, means the same as to fall apart.
- to make a pig's ear of — If you make a pig's ear of something you are doing, you do it very badly.
- to play happy families — to spend time with your family or partner and to outwardly give the impression of being happy (although this may not be the case)
- unprofessional conduct — activity that is contrary to the accepted code of conduct of a profession
- verification principle — (in the philosophy of the logical positivists) the doctrine that nontautologous statements are meaningful only if it is in principle possible to establish empirically whether they are true or false
- wi-fi protected access — (networking, security) (WPA) A security scheme for wireless networks, developed by the networking industry in response to the shortcomings of Wired Equivalent Privacy (WEP). WPA uses Temporal Key Integrity Protocol (TKIP) encryption and provides built-in authentication, giving security comparable to VPN tunneling with WEP, with the benefit of easier administration and use.