20-letter words containing a, n, o, m, l, u
- premenstrual tension — Premenstrual tension is the same as premenstrual syndrome. The abbreviation PMT is often used.
- prince william sound — a sound in the Gulf of Alaska, on the S coast of Alaska: S end of Trans-Alaska oil pipeline at port of Valdez.
- procedural agreement — regulations agreed between the parties to collective bargaining, defining the bargaining units, bargaining scope, procedures for collective bargaining, and the facilities to be provided to trade union representatives
- programming language — a high-level language used to write computer programs, as COBOL or BASIC, or, sometimes, an assembly language.
- public administrator — an official of a city, county, or state government.
- punch a (time) clock — to insert a timecard into a time clock when coming to or going from work
- quantum field theory — any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.
- saint john ambulance — an organization that provides first aid and first-aid training
- south american plate — a major tectonic division of the earth's crust, comprising the continent of South America and several ocean basins and bounded on the north by the Caribbean Plate, on the east by the Mid-Atlantic Ridge, on the west by a submarine trench that borders the western coast of the continent, and on the south by the Antarctic Plate.
- systemic circulation — the circulatory system in general.
- thermal conductivity — the amount of heat per unit time per unit area that can be conducted through a plate of unit thickness of a given material, the faces of the plate differing by one unit of temperature.
- thomas of erceldoune — Thomas of, Thomas of Erceldoune.
- to burst into flames — If something bursts into flames or bursts into flame, it suddenly starts burning strongly.
- ultimate constituent — an element of a construction that cannot be further divided into grammatical constituents: the morphemes of an utterance are usually considered to be its ultimate constituents.
- uranium hexafluoride — a colorless, water-insoluble, crystalline, volatile solid, UF 6 , used in its gaseous state in separating uranium 235 from uranium.
- walking-around money — money that is carried on the person for routine expenses and minor emergencies; pocket money.
- wardrobe malfunction — an embarrassing situation caused by the clothes a person is wearing
- wilson cloud chamber — cloud chamber.
- zone of accumulation — B horizon.