20-letter words containing a, h, e, d, f
- 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.
- return from the dead — (jargon) To regain access to the net after a long absence. Compare person of no account.
- roof over one's head — If you have a roof over your head, you have somewhere to live.
- sarcastic fringehead — any fish of the genus Neoclinus, characterized by a row of fleshy processes on the head, as N. blanchardi (sarcastic fringehead) of California coastal waters.
- see the light of day — come into being
- software methodology — (programming) The study of how to navigate through each phase of the software process model (determining data, control, or uses hierarchies, partitioning functions, and allocating requirements) and how to represent phase products (structure charts, stimulus-response threads, and state transition diagrams).
- spiral of archimedes — a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
- the day of judgement — a Christian term for the ending of the world
- the founding fathers — any of the men who were members of the U.S. Constituional Convention of 1787
- the grove of academe — the academic world
- the luck of the draw — If you say that something is the luck of the draw, you mean that it is the result of chance and you cannot do anything about it.
- the order of the day — If a particular way of behaving or doing something is the order of the day, it is very common.
- the-lady-of-the-lake — a narrative poem (1810) by Sir Walter Scott.
- third-party software — software created by programmers or publishers independent of the manufacturer of the hardware for which it is intended.
- thomas of erceldoune — Thomas of, Thomas of Erceldoune.
- to flog a dead horse — If you say that someone is flogging a dead horse, you mean that they are trying to achieve something impossible.
- uncertificated share — a share of a mutual fund credited to the account of a shareholder without the physical issuance of a certificate evidencing ownership.
- unified screw thread — a screw thread system introduced for defence equipment (1939–44), in which the thread form and pitch were a compromise between British Standard Whitworth and American Standard Sellers: adopted by the International Standards Organization
- university of durham — (body, education) A busy research and teaching community in the historic cathedral city of Durham, UK (population 61000). Its work covers key branches of science and technology and traditional areas of scholarship. Durham graduates are in great demand among employers and the University helps to attract investment into the region. It provides training, short courses, and expertise for industry. Through its cultural events, conferences, tourist business and as a major employer, the University contributes in a wide social and economic sense to the community. Founded in 1832, the University developed in Durham and Newcastle until 1963 when the independent University of Newcastle upon Tyne came into being. Durham is a collegiate body, with 14 Colleges or Societies which are a social and domestic focus for students. In 1992, the Universities of Durham and Teesside launched University College, Stockton-on-Tees, which has 190 students in the first year.
- uranium hexafluoride — a colorless, water-insoluble, crystalline, volatile solid, UF 6 , used in its gaseous state in separating uranium 235 from uranium.