17-letter words containing d, a, c, r
- recreation ground — an open space for public recreation, esp one in a town, with swings and slides, etc, for children
- recreational drug — drug taken for pleasure
- recurring decimal — Mathematics. repeating decimal.
- red and the black — a novel (1832) by Stendhal.
- red-backed shrike — a common Eurasian shrike, Lanius collurio, the male of which has a grey crown and rump, brown wings and back, and a black-and-white face
- reduction formula — a formula, such as sin (90° ± A) = cos A, expressing the values of a trigonometric function of any angle greater than 90° in terms of a function of an acute angle
- reed canary grass — any of various grasses of the genus Phalaris, as P. canariensis, native to the Canary Islands, bearing seed used as food for cage birds, or P. arundinacea (reed canary grass) used throughout the Northern Hemisphere as fodder.
- refractory period — a short period after a nerve or muscle cell fires during which the cell cannot respond to additional stimulation.
- regulated tenancy — (in Britain) the letting of a dwelling by a nonresident private landlord, usually at a registered fair rent, from which the landlord cannot evict the tenant without a possession order from a court
- remittance advice — a letter sent by a customer to a supplier, to let them know that their invoice has been paid
- repeating decimal — a decimal numeral that, after a certain point, consists of a group of one or more digits repeated ad infinitum, as 2.33333 …. or 23.0218181818 ….
- rheumatic disease — any of a group of diseases of the connective tissue, of uncertain causes, including rheumatoid arthritis, gout, and rheumatic fever
- rheumatoid factor — an antibody that is found in the blood of many persons afflicted with rheumatoid arthritis and that reacts against globulins in the blood.
- richard arkwright — Sir Richard, 1732–92, English inventor of the spinning jenny.
- road construction — the building of roads
- road-fund licence — a licence showing that the tax payable in respect of a motor vehicle has been paid
- ross and cromarty — a historic county in NW Scotland.
- sacred roman rota — rota1 (def 3).
- sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
- sacrificial anode — Chemistry. an anode that is attached to a metal object subject to electrolysis and is decomposed instead of the object.
- san pedro channel — a strait between the mainland of SW California and Santa Catalina Island. About 20 miles (32 km) wide.
- sandro botticelli — Sandro [san-droh,, sahn-;; Italian sahn-draw] /ˈsæn droʊ,, ˈsɑn-;; Italian ˈsɑn drɔ/ (Show IPA), (Alessandro di Mariano dei Filipepi) 1444?–1510, Italian painter.
- scattered showers — showers that are scattered across an area, or that occur at intervals throughout the day
- school playground — school's outdoor recreation area
- schwedler's maple — a variety of the Norway maple, Acer platanoides schwedleri, producing red leaves that subsequently turn green.
- search and rescue — Search and rescue operations involve looking for people who are lost or in danger, for example, after a war or a natural disaster, and bringing them back safely.
- second balkan war — Balkan War (def 2).
- second derivative — the derivative of the derivative of a function: Acceleration is the second derivative of distance with respect to time.
- second generation — being the second generation of a family to be born in a particular country: the oldest son of second-generation Americans.
- second-generation — being the second generation of a family to be born in a particular country: the oldest son of second-generation Americans.
- secondary battery — storage battery.
- secondary boycott — a boycott by union members against their employer in order to induce the employer to bring pressure on another company involved in a labor dispute with the union.
- secondary contact — communication or relationship between people characterized by impersonal and detached interest on the part of those involved.
- secondary glazing — insulation by means of a second pane of glass, or a sheet of plastic: a simple form of double glazing
- secondary process — the conscious mental activity and logical thinking controlled by the ego and influenced by environmental demands.
- secondary product — a product that is not the main product of an industry; a by-product
- secondary quality — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
- secondary rainbow — a faint rainbow formed by light rays that undergo two internal reflections in drops of rain, appearing above the primary rainbow and having its colors in the opposite order.
- secondary sealing — Secondary sealing is a system of wiper seals used in floating roof tanks.
- secondary winding — A secondary winding is the winding of a transformer that receives its energy by electromagnetic induction from the primary winding.
- securities dealer — a person who buys and sells securities
- self-depreciating — self-deprecating.
- semi-manufactured — the making of goods or wares by manual labor or by machinery, especially on a large scale: the manufacture of television sets.
- shorthold tenancy — letting of a dwelling for between one and five years at a fair rent
- single-track road — a road that is only wide enough for one vehicle
- smarandache logic — neutrosophic logic
- social democratic — A social democratic party is a political party whose principles are based on social democracy.
- sodium bichromate — a red or orange crystalline, water-soluble solid, Na 2 Cr 2 O 7 ⋅2H 2 O, used as an oxidizing agent in the manufacture of dyes and inks, as a corrosion inhibitor, a mordant, a laboratory reagent, in the tanning of leather, and in electroplating.
- sodium dichromate — a red or orange crystalline, water-soluble solid, Na 2 Cr 2 O 7 ⋅2H 2 O, used as an oxidizing agent in the manufacture of dyes and inks, as a corrosion inhibitor, a mordant, a laboratory reagent, in the tanning of leather, and in electroplating.
- sound spectrogram — a graphic representation, produced by a sound spectrograph, of the frequency, intensity, duration, and variation with time of the resonance of a sound or series of sounds.