15-letter words containing a, d, p, t, i
- radioautography — autoradiography.
- radiophotograph — a photograph or other image transmitted by radio.
- radioprotection — protection against radiation
- radioprotective — giving protection against the effects of radiation
- radiotelegraphy — the constructing or operating of radiotelegraphs.
- recoil-operated — employing the recoil force of an explosive projectile to prepare the firing mechanism for the next shot.
- reduplicatively — in a reduplicative manner
- rendering plant — a factory where waste products and livestock carcasses are converted into industrial fats and oils (such as tallow, used to make soap) and other products (such as fertilizer)
- río de la plata — Rí·o de la [ree-aw th e lah] /ˈri ɔ ðɛ lɑ/ (Show IPA) an estuary on the SE coast of South America between Argentina and Uruguay, formed by the Uruguay and Paraná rivers, about 185 miles (290 km) long.
- rite de passage — rite of passage.
- serpentine jade — a green variety of serpentine used as a gem: not a true jade.
- sheffield plate — sheet copper with a cladding of silver.
- side impact bar — A side impact bar is a long beam in a car door that is designed to protect passengers during a crash.
- 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
- 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.
- 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
- 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
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- tax expenditure — any reduction in government revenue through preferential tax treatment, as deductions or credits.
- the disappeared — people who have been arrested secretly or abuducted and presumably imprisoned or killed
- the handicapped — those who are physically disabled or mentally retarded
- the perigordian — the Perigordian culture
- total depravity — the Calvinist doctrine that humankind's entire nature, including its reason, is corrupt or sinful as a result of the Fall and that people are therefore completely dependent on God for regeneration.
- trading capital — the total amount of money available for buying assets
- trading company — a company that is owned by the people who have bought shares in that company
- trading partner — a person, organization, or country with whom somebody customarily does business
- 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
- treacle pudding — a sponge cake with syrup on top
- 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).
- type i diabetes — diabetes (def 3).
- unanticipatedly — in an unanticipated or unexpected manner
- undercapitalize — to provide an insufficient amount of capital for (a business enterprise).
- underpopulation — having a population lower than is normal or desirable.
- undisappointing — not disappointing
- unpractisedness — the quality or state of being unpractised