15-letter words containing a, u, d, i, o
- refuse disposal — the act of disposing of rubbish and waste
- residual income — the remaining income (of a business or person) after necessary debts, expenses, etc, have been paid
- right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
- robert guiscard — Robert [French raw-ber] /French rɔˈbɛr/ (Show IPA), (Robert de Hauteville) c1015–85, Norman conqueror in Italy.
- rogation sunday — the fifth Sunday after Easter; it sees the start of the supplications that are continued during the following Monday, Tuesday and Wednesday
- roundaboutation — circumlocution
- roundaboutility — roundaboutness
- routeing domain — (networking) (US "routing") A set of routers that exchange routeing information within an administrative domain.
- sandwich course — A sandwich course is an educational course in which you have periods of study between periods of being at work.
- securicor guard — a guard who works for Securicor
- self-authorized — given or endowed with authority: an authorized agent.
- self-inoculated — to implant (a disease agent or antigen) in a person, animal, or plant to produce a disease for study or to stimulate disease resistance.
- semidocumentary — a film or television programme that is fictional but includes many factual events or details
- silver quandong — an Australian tree, Elaeocarpus grandis: family Elaeocarpaceae
- sled cultivator — go-devil (def 5).
- sodium arsenite — a white or grayish-white, water-soluble, poisonous powder, NaAsO 2 , used chiefly in arsenical soaps for hides, as an insecticide, and as a weed-killer.
- sodium benzoate — a white crystalline soluble compound used as an antibacterial and antifungal agent in preserving food (E211), as an antiseptic, and in making dyes and pharmaceuticals. Formula: (C6H5COO)Na
- sodium chlorate — a colorless, water-soluble solid, NaClO 3 , cool and salty to the taste, used chiefly in the manufacture of explosives and matches, as a textile mordant, and as an oxidizing and bleaching agent.
- sodium citrates — the sodium salts of citric acid (monosodium citrate, disodium citrate, trisodium citrate)
- sodium ethylate — a white, hygroscopic powder, C 2 H 5 ONa, that is decomposed by water into sodium hydroxide and alcohol: used chiefly in organic synthesis.
- sodium silicate — a substance having the general formula, Na2O.xSiO2, where x varies between 3 and 5, existing as an amorphous powder or present in a usually viscous aqueous solution
- sodium stearate — Sodium stearate is a salt of stearic acid used as a surfactant (= a substance that reduces the surface tension of a liquid and allows it to foam) in order to aid the solubility of hydrophobic substances in oral medicines.
- 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
- sound deadening — a process or material that reduces the resonance or volume of sound
- sound-and-light — combining sound effects or music with unusual lighting displays: to promote a product with a spectacular sound-and-light presentation.
- spawning ground — a place where fish deposit their eggs for fertilization
- stamping ground — a habitual or favorite haunt.
- state education — education provided by the state; education which is not private
- studio audience — spectators on a TV set
- studio portrait — a photograph of a person taken in a studio
- subsidiary coin — a coin, especially one made of silver, having a value less than that of the monetary unit.
- sulphurous acid — an unstable acid produced when sulphur dioxide dissolves in water: used as a preservative for food and a bleaching agent. Formula: H2SO3
- summer holidays — the time when children do not go to school in the summer
- superordination — Logic. the relation between a universal proposition and a particular proposition of the same quality containing the same terms in the same order.
- tank foundation — A tank foundation is a base which is designed to support the weight of oil tanks and contain spillage.
- the daily round — the usual activities of one's day
- the midas touch — ability to make money
- thought reading — mind reading.
- thousand island — of or relating to the Thousand Islands or their inhabitants
- titius-bode law — Bode's law.
- tokelau islands — a group of islands in the S Pacific Ocean belonging to New Zealand. 4 sq. mi. (10 sq. km).
- trading account — an account similar to a traditional bank account, holding cash and securities, and administered by an investment dealer
- training ground — an area where people prepare for sporting competitions, with activities primarily concentrating on skills and fitness
- truman doctrine — the policy of President Truman, as advocated in his address to Congress on March 12, 1947, to provide military and economic aid to Greece and Turkey and, by extension, to any country threatened by Communism or any totalitarian ideology.
- turnaround time — the total time taken between the submission of a program for execution and the return of the complete output to the customer
- ultra-modernist — very advanced in ideas, design, or techniques.
- ultrademocratic — (in the US) characteristic of a staunch member or supporter of the Democratic Party and its agenda
- ultrafastidious — extremely fastidious
- un-coincidental — happening by or resulting from coincidence; by chance: a coincidental meeting.
- un-considerable — rather large or great in size, distance, extent, etc.: It cost a considerable amount. We took a considerable length of time to decide.