15-letter words containing p, a, d, i, s
- 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
- quasi-dependent — relying on someone or something else for aid, support, etc.
- radio telescope — a system consisting of an antenna, either parabolic or dipolar, used to gather radio waves emitted by celestial sources and bring them to a receiver placed in the focus.
- radiophosphorus — phosphorus 32.
- random sampling — a method of selecting a sample (random sample) from a statistical population in such a way that every possible sample that could be selected has a predetermined probability of being selected.
- red-back spider — a venomous spider, Latrodectus hasselti, of Australia and New Zealand, related to the black widow spider and having a bright red stripe on the back.
- refuse disposal — the act of disposing of rubbish and waste
- remand prisoner — a prisoner who is sent back into custody (or sometimes admitted to bail) to await trial or continuation of their trial
- rite de passage — rite of passage.
- seaside sparrow — a species of sparrow, Ammospiza maritima, existing in two subspecies, one (Cape Sable seaside sparrow) having dark olive-drab plumage with a lighter breast and underbelly, and the other (dusky seaside sparrow) having bold black and white markings on the breast and underbelly: the dusky seaside sparrow is almost extinct.
- self-proclaimed — to announce or declare in an official or formal manner: to proclaim war.
- serpentine jade — a green variety of serpentine used as a gem: not a true jade.
- sewage disposal — waste processing
- sheffield plate — sheet copper with a cladding of silver.
- shopping arcade — a place where a number of shops are connected together under one roof
- side impact bar — A side impact bar is a long beam in a car door that is designed to protect passengers during a crash.
- sidereal period — the period of revolution of a body about another with respect to one or more distant stars
- simplicidentate — belonging or pertaining to the Simplicidentata, formerly regarded as a suborder or division of rodents having only one pair of upper incisor teeth.
- slap and tickle — sexual play
- social spending — the money that is spent on welfare payments
- sodium sulphate — a solid white substance that occurs naturally as thenardite and is usually used as the white anhydrous compound (salt cake) or the white crystalline decahydrate (Glauber's salt) in making glass, detergents, and pulp. Formula: Na2SO4
- sophisticatedly — (of a person, ideas, tastes, manners, etc.) altered by education, experience, etc., so as to be worldly-wise; not naive: a sophisticated young socialite; the sophisticated eye of an experienced journalist.
- spanish needles — (used with a singular or plural verb) a composite plant, Bidens bipinnata, having achenes with downwardly barbed awns.
- spawning ground — a place where fish deposit their eggs for fertilization
- special edition — newspaper, magazine: extra issue
- special student — a student who is not seeking a degree but enrols in a course, esp to gain academic credits
- speed indicator — an instrument for counting the number of revolutions of a gasoline engine.
- sphaerosiderite — a type of siderite
- spheroidization — the conversion of grains into spheroids
- spit and polish — great care in maintaining smart appearance and crisp efficiency: The commander was concerned more with spit and polish than with the company's morale.
- 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
- spread sampling — the selection of a corpus for statistical analysis by selecting a number of short passages at random throughout the work and considering their aggregation
- spread-eagleism — boastfulness or bombast, especially in the display of patriotic or nationalistic pride in the U.S.; flag-waving.
- sprinkler dance — a celebratory dance in which participants extend one arm and shake it to imitate the action of a rotating water sprinkler
- stamping ground — a habitual or favorite haunt.
- steamed pudding — a traditional pudding containing fat, sugar, eggs, flour, and other ingredients, which is steamed
- strike pay dirt — to achieve one's objective
- studio portrait — a photograph of a person taken in a studio
- suicide attempt — bid to kill oneself
- sulphurous acid — an unstable acid produced when sulphur dioxide dissolves in water: used as a preservative for food and a bleaching agent. Formula: H2SO3
- superindividual — greater than the individual
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- surface-ripened — (of cheese) ripened on the surface by molds or other microorganisms.
- the disappeared — people who have been arrested secretly or abuducted and presumably imprisoned or killed
- trading profits — profits made from the buying and selling of goods and services
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- tricuspid valve — the valve, consisting of three triangular flaps of tissue between the right auricle and ventricle of the heart, that keeps blood from flowing back into the auricle.
- type 1 diabetes — diabetes (def 3).
- type 2 diabetes — diabetes (def 4).