16-letter words containing t, r, o, c
- projection paper — sensitized paper for recording a projected image.
- projection print — a print made by the projection of an image onto sensitized paper.
- 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 concept — the stage during the development of a product when it is established that the product will function as intended
- 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
- prophylactically — defending or protecting from disease or infection, as a drug.
- propylthiouracil — a white crystalline compound, C 7 H 1 0 N 2 OS, that interferes with the synthesis of thyroid hormone by the thyroid gland: used in the treatment of hyperthyroidism.
- prosecco plotter — one of a group of Labour politicians who allegedly plotted to oust Prime Minister Gordon Brown from office in the summer of 2008
- prosecution case — the case brought against someone by a legal authority
- prospect heights — a town in N Illinois.
- prosthetic group — the nonprotein acid constituent of a conjugate protein, as the heme group of hemoglobin.
- protection money — law: criminal fee
- protection order — a legal instruction by a court directing a person not to harm or harass a particular individual
- protection ratio — the minimum acceptable ratio between the amplitudes of a wanted radio or television broadcast signal and any interfering signal
- protective slope — a slope given to a yard or the like to drain surface water away from a building.
- protestant ethic — work ethic.
- 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-realistic — interested in, concerned with, or based on what is real or practical: a realistic estimate of costs; a realistic planner.
- pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- psychogeriatrics — the psychology of old age.
- 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.
- public transport — fare-paying travel
- punctuation mark — any of a group of conventional marks or characters used in punctuation, as the period, comma, semicolon, question mark, or dash.
- pure watercolour — water-soluble pigment, applied in transparent washes and without the admixture of white pigment in the lighter tones
- put to the torch — to set fire to; burn down
- pyloric stenosis — an abnormal narrowing of the valve at the outlet from the stomach, preventing normal passage of food into the small intestine.
- pyroconductivity — conductivity brought about by the application of heat, especially in solids that are not conductors at normal temperatures.
- quantum computer — a computer that makes use of the quantum states of electrons or other particles to store and process information as quantum bits.
- quasi-democratic — pertaining to or of the nature of democracy or a democracy.
- quasi-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- radio-controlled — A radio-controlled device works by receiving radio signals which operate it.
- radiosymmetrical — radially symmetrical.
- radius of action — the maximum distance that a ship, aircraft, or land vehicle can travel from its base and return without refuelling
- rambunctiousness — difficult to control or handle; wildly boisterous: a rambunctious child.
- rape of the lock — a mock-epic poem (1712) by Alexander Pope.
- rate of exchange — exchange rate.
- rating community — an online community based around a website that allows members to rate each other's photographs, qualifications, etc, as well as those of applicants, and which only those approved by existing members are allowed to join
- rattle so's cage — If someone rattles your cage, they do something which is intended to make you feel nervous.
- re-accreditation — to ascribe or attribute to (usually followed by with): He was accredited with having said it.
- re-chromatograph — to separate and analyse (a mixture of liquids or gases) by means of chromatography a second or further time
- reaction chamber — the chamber in a rocket engine in which the reaction or combustion of fuel occurs
- reaction turbine — a turbine driven by the reactive force of a fluid passing through the rotor blades.
- rearguard action — an action fought by a rearguard
- recapitalization — a revision of a corporation's capital structure by an exchange of securities.
- reception centre — A reception centre is a place where people who have no homes or are being looked after by the government can live until somewhere else is found for them to live.