15-letter words containing y, n
- pyrocrystalline — crystallized from a molten magma or highly heated solution.
- pyrometric cone — (in a kiln) a triangular piece of material that indicates by bending or melting that a certain temperature has been reached.
- pyrotechnically — in a pyrotechnical manner
- qualifying exam — any examination that one needs to pass in order to begin or continue with a course of study
- quality control — a system for verifying and maintaining a desired level of quality in an existing product or service by careful planning, use of proper equipment, continued inspection, and corrective action as required.
- quantifiability — (uncountable) The condition of being quantifiable.
- quantity theory — a theory stating that the general price level varies directly with the quantity of money in circulation and the velocity with which it is circulated, and inversely with the volume of production expressed by the total number of money transactions
- quantum gravity — a theory of the gravitational interaction that involves quantum mechanics to explain the force
- quarter century — a period of twenty five years
- quatercentenary — a 400th aniversary or its celebration.
- queen's highway — king's highway.
- query expansion — (information science) Adding search terms to a user's search. Query expansion is the process of a search engine adding search terms to a user's weighted search. The intent is to improve precision and/or recall. The additional terms may be taken from a thesaurus. For example a search for "car" may be expanded to: car cars auto autos automobile automobiles. The additional terms may also be taken from documents that the user has specified as being relevant; this is the basis for the "more like this" feature of some search engines. The extra terms can have positive or negative weights.
- questionability — of doubtful propriety, honesty, morality, respectability, etc.: questionable activities; in questionable taste.
- quezon y molina — Manuel Luis [mah-nwel lwees] /mɑˈnwɛl lwis/ (Show IPA), 1878–1944, Philippine political leader; 1st president of the Philippine Commonwealth 1933–44.
- quick-and-dirty — Informal. slipshod.
- racial minority — a group of a certain race that are in the minority compared to a larger group, the rest of the population, etc
- radar astronomy — the branch of astronomy that uses radar to map the surfaces of planetary bodies, as the moon and Venus, and to determine periods of rotation.
- radio astronomy — the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe.
- radio frequency — the frequency of the transmitting waves of a given radio message or broadcast.
- radio sono-buoy — a buoy equipped to detect underwater noises and transmit them by radio
- radiogoniometry — the science of detecting the direction of radio waves
- radioimmunology — the study of biological substances or processes with the aid of antigens or antibodies labeled with a radioactive isotope.
- radiotechnology — the technical application of any form of radiation to industry.
- railway journey — a journey made by railway train
- railway network — a system of intersecting rail routes
- railway station — train stop, railroad station
- ranfurly shield — (in New Zealand) the premier rugby trophy, competed for annually by provincial teams
- range paralysis — Marek's disease.
- ray of sunshine — beam of sunlight
- ray-finned fish — any of various bony fishes of the subclass Actinopterygii, having strong slender rays, excluding the coelacanth and lungfish.
- re-entry permit — a permit required to return to certain countries after leaving for an extended period of time
- ready-furnished — (of a room, house, office, etc) fitted with furniture before being rented or sold
- reality fiction — a satirical parody of a reality TV show
- reality testing — the objective evaluation of situations, defective in certain psychoses, that enable one to distinguish between the external and the internal worlds and between the self and the nonself.
- recognizability — to identify as something or someone previously seen, known, etc.: He had changed so much that one could scarcely recognize him.
- reconcilability — capable of being reconciled.
- recycle solvent — A recycle solvent is a solvent (= a substance that can dissolve another substance) which is used in a recovery system.
- recycling plant — a factory for processing used or abandoned materials
- reentry vehicle — the section of a spacecraft or ballistic missile designed to return to earth.
- refinery revamp — A refinery revamp is a change in the technology or processes used in a refinery.
- regulatory gene — any gene that exercises control over the expression of another gene or genes.
- remembrance day — (in Canada) November 11, observed as a legal holiday in memory of those who died in World Wars I and II, similar to Veterans Day in the U.S.
- remonstratingly — in an remonstrating or dissenting manner
- remonstratively — in a remonstrative or expostulatory manner
- resurrectionary — pertaining to or of the nature of resurrection.
- revolutionarily — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
- reye's syndrome — an uncommon, severe disorder occurring primarily in children after a viral illness, as influenza or chickenpox, and associated with aspirin usage, involving swelling of the brain and liver and affecting other organs: symptoms include fever, projectile vomiting, confusion, and, sometimes, respiratory arrest.
- reynolds number — a dimensionless number, vρl/η, where v is the fluid velocity, ρ the density, η the viscosity and l a dimension of the system. The value of the number indicates the type of fluid flow
- rhyme or reason — If something happens or is done without rhyme or reason, there seems to be no logical reason for it to happen or be done.
- rhyming couplet — a pair of lines in poetry that rhyme and usually have the same rhythm