17-letter words containing r, a, d, i, o, u
- double pair royal — a set of four cards of the same denomination, worth 12 points.
- double quatrefoil — a charge having the form of a foil with eight leaves, used especially as the cadency mark of a ninth son.
- double refraction — the separation of a ray of light into two unequally refracted, plane-polarized rays of orthogonal polarizations, occurring in crystals in which the velocity of light rays is not the same in all directions.
- double track line — a railway line with double track
- drained of colour — colourless
- drinking fountain — a water fountain that ejects a jet of water for drinking without a cup.
- ductus arteriosis — a fetal blood vessel that connects the left pulmonary artery directly to the descending aorta, normally closing after birth.
- fade in (or out) — to appear or cause to appear (or disappear) gradually; make or become more (or less) distinct
- fluid lubrication — lubrication in which bearing surfaces are separated by an oil film sustained by the motion of the parts
- folie de grandeur — a delusion of grandeur; megalomania.
- forward quotation — the price quoted on a forward delivery.
- foundation course — A foundation course is a course that you do at some colleges and universities in order to prepare yourself for a longer or more advanced course.
- further education — adult education.
- graduated pension — the money that an employee receives after retirement if they have paid into the graduated pension scheme
- grand touring car — GT (def 2).
- grand union canal — a canal in S England linking London and the Midlands: opened in 1801
- half-round chisel — a cold chisel with a semicircular cutting edge used for making narrow channels
- haroun-al-raschid — Harun al-Rashid.
- homeland security — national defence
- horseradish sauce — a piquant sauce made from horseradish root, vinegar, etc, and traditionally eaten in Britain with roast beef
- hydrofluoric acid — a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.
- hydrotherapeutics — hydrotherapy.
- hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.
- i beg your pardon — You say 'Pardon?' or 'I beg your pardon?' or, in American English, 'Pardon me?' when you want someone to repeat what they have just said because you have not heard or understood it.
- illegal procedure — a penalty assessed against the offensive team for a technical rules violation, as in assuming an illegal formation.
- in double harness — in a harness for two animals pulling the same carriage, plow, etc.
- in the background — behind the focus of attention
- incubation period — the period between infection and the appearance of signs of a disease.
- induction furnace — a type of electric furnace used for melting a charge of scrap by the heat produced by its own electrical resistance.
- industrial action — job action.
- industrial school — a school for teaching one or more branches of industry; trade or vocational school.
- industrialisation — Alternative spelling of industrialization.
- industrialization — the large-scale introduction of manufacturing, advanced technical enterprises, and other productive economic activity into an area, society, country, etc.
- integrated course — a course that covers several subjects
- intercommunicated — Simple past tense and past participle of intercommunicate.
- italian greyhound — one of an Italian breed of toy dogs resembling a greyhound.
- juazeiro do norte — a city in Bahia state, NE Brazil.
- judgment of paris — the decision by Paris to award Aphrodite the golden apple of discord competed for by Aphrodite, Athena, and Hera.
- lago de nicaragua — Spanish name of Lake Nicaragua.
- lambdoidal suture — the lambda-shaped seam or line of joining between the occipital and two parietal bones at the back part of the skull.
- legendre equation — a differential equation of the form (1− x 2) d2y/dx2 − 2 xdy/dx + a (a + 1) y = 0, where a is an arbitrary constant.
- liberal education — an education based primarily on the liberal arts, emphasizing the development of intellectual abilities as opposed to the acquisition of professional skills.
- liquid petrolatum — mineral oil.
- liquid propellant — a rocket propellant in liquid form.
- medical procedure — A medical procedure is a medical treatment or operation.
- medicochirurgical — pertaining to medicine and surgery.
- microencapsulated — Encapsulated using microencapsulation.
- microminiaturized — Simple past tense and past participle of microminiaturize.
- modulo arithmetic — modular arithmetic
- multi-directional — extending or operating in several directions at the same time; functioning or going in more than one direction: a multidirectional stereo speaker system.