15-letter words containing d, r, y, n
- presidents' day — the third Monday in February, a legal holiday in the U.S., commemorating the birthdays of George Washington and Abraham Lincoln.
- primary winding — an induction coil that is the part of an electric circuit in which a changing current induces a current in a neighbouring circuit
- privately owned — owned by a private individual or organization, rather than by the state or a public body
- profoundly deaf — unable to hear any sound below 95 decibels in one's better ear
- propionaldehyde — a colorless, water-soluble liquid, C 3 H 6 O, having a pungent odor: used chiefly in the manufacture of plastics.
- propylhexedrine — a colorless, adrenergic, water-soluble liquid, C 1 0 H 2 N, used by inhalation as a nasal decongestant.
- pseudopregnancy — Pathology, Veterinary Pathology. false pregnancy.
- pyramid selling — Pyramid selling is a method of selling in which one person buys a supply of a particular product direct from the manufacturer and then sells it to a number of other people at an increased price. These people sell it on to others in a similar way, but eventually the final buyers are only able to sell the product for less than they paid for it.
- pyrimidine base — any of a number of similar compounds having a basic structure that is derived from pyrimidine, including cytosine, thymine, and uracil, which are constituents of nucleic acids
- quick-and-dirty — Informal. slipshod.
- 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.
- ranfurly shield — (in New Zealand) the premier rugby trophy, competed for annually by provincial teams
- ray-finned fish — any of various bony fishes of the subclass Actinopterygii, having strong slender rays, excluding the coelacanth and lungfish.
- ready-furnished — (of a room, house, office, etc) fitted with furniture before being rented or sold
- 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.
- 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
- right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
- rogation sunday — the fifth Sunday after Easter; it sees the start of the supplications that are continued during the following Monday, Tuesday and Wednesday
- romantic comedy — a light and humorous movie, play, etc., whose central plot is a happy love story.
- ross dependency — a territory in Antarctica, including Ross Island, the coasts along the Ross Sea, and adjacent islands: a dependency of New Zealand. About 175,000 sq. mi. (453,250 sq. km).
- rotary drilling — Rotary drilling is the use of a continuous circular motion of the drill bit to make a hole.
- rough and ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
- rough-and-ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
- roundaboutility — roundaboutness
- ruddy turnstone — a common shorebird, Arenaria interpres, of the New and Old World arctic, wintering south to southern South America and Australia and having striking reddish-brown, black, and white plumage.
- rudyard kipling — (Joseph) Rudyard [ruhd-yerd] /ˈrʌd yərd/ (Show IPA), 1865–1936, English author: Nobel Prize 1907.
- salivary glands — any of several glands, as the submaxillary glands, that secrete saliva.
- sanitary cordon — cordon sanitaire.
- secondary cause — a cause which is not the primary or ultimate cause
- secondary color — a color, as orange, green, or violet, produced by mixing two primary colors.
- secondary group — a group of people with whom one's contacts are detached and impersonal.
- secondary metal — metal derived wholly or in part from scrap.
- secondary xylem — xylem derived from the cambium during secondary growth.
- semicylindrical — of, relating to, or having the shape of a semicylinder
- semidocumentary — a film or television programme that is fictional but includes many factual events or details
- serendipitously — come upon or found by accident; fortuitous: serendipitous scientific discoveries.
- soul-destroying — Activities or situations that are soul-destroying make you depressed, because they are boring or because there is no hope of improvement.
- spratly islands — a widely-scattered group of uninhabited islets and reefs in the S South China Sea, the subject of territorial claims wholly or in part by six neighbouring nations
- sticky-fingered — given to thieving
- subsidiary coin — a coin, especially one made of silver, having a value less than that of the monetary unit.
- sunset industry — any industry that holds little promise of future development
- superabundantly — very or too abundantly
- superheterodyne — denoting, pertaining to, or using a method of processing received radio or video signals in which an incoming modulated wave is changed by the heterodyne process into a lower-frequency wave and then subjected to amplification and subsequent detection.