10-letter words containing o, r, a, i, u
- quadricone — a quadric surface swept out by a straight line that passes through a fixed point such that no straight line can intersect it at more than two points
- quadrifoil — Alternative form of quadrifoliate.
- quadriform — having four parts or sides
- quadrilogy — (nonstandard) A tetralogy.
- quadripole — an electric circuit with two input and two output terminals
- quadroxide — (chemistry) A tetroxide.
- quarkonium — a meson composed of a quark and an antiquark of the same flavor.
- quartation — the adding of silver to a mixture of gold and silver until the ratio is about one to three, at which point the silver can be removed using nitric acid
- quasiorder — (set theory) A preorder.
- quaternion — a group or set of four persons or things.
- quatorzain — a verse of fourteen lines
- quatrefoil — a leaf composed of four leaflets.
- radiculose — having small roots or rhizoids
- radio tube — a vacuum tube used in a radio receiving set.
- radiopaque — opaque to radiation; visible in x-ray photographs and under fluoroscopy (opposed to radiotransparent).
- radius rod — (in a feathering paddle wheel) any of the rods, meeting in a hub mounted eccentrically with the paddle-wheel shaft, for feathering the paddles while in the water.
- raduliform — rasp-like
- rain cloud — a cloud or a mass of clouds that yields rain.
- rain-cloud — a cloud or a mass of clouds that yields rain.
- raisonneur — a character in a play, novel, or the like who voices the central theme, philosophy, or point of view of the work.
- ranivorous — that eats frogs
- recusation — the act of recusing a judge
- refutation — an act of refuting a statement, charge, etc.; disproof.
- regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.
- reputation — the estimation in which a person or thing is held, especially by the community or the public generally; repute: a man of good reputation.
- rheumatoid — resembling rheumatism.
- rightabout — the position assumed by turning about to the right so as to face in the opposite direction.
- rio cuarto — a city in central Argentina.
- riot squad — a group of police officers having special training and equipment for quelling riots and other public disturbances.
- rubiaceous — belonging to the Rubiaceae, the madder family of plants.
- rumination — to chew the cud, as a ruminant.
- rusticator — to go to the country.
- saliferous — containing or producing salt: saliferous strata.
- salubrious — favorable to or promoting health; healthful: salubrious air.
- sanatorium — a hospital for the treatment of chronic diseases, as tuberculosis or various nervous or mental disorders.
- sanitorium — a facility for housing patients with long-term illnesses
- saturation — the act or process of saturating.
- sdrucciola — (of rhymes) triple
- seaborgium — a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Sg; atomic number: 106.
- simulatory — to create a simulation, likeness, or model of (a situation, system, or the like): to simulate crisis conditions.
- sit around — be idle, lounge about
- souari nut — the large, edible, oily nut of a tall tree, Caryocar nuciferum, of tropical South America.
- souterrain — a subterranean passage or structure; grotto.
- sporangium — the case or sac in which spores are produced.
- squamiform — shaped like a scale.
- staurolite — a mineral, basic iron aluminum silicate, Fe 2 Al 2 O 7 (SiO 4) 4 (OH), occurring in brown to black prismatic crystals, which are often twinned in the form of a cross.
- stimulator — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- stramonium — jimson weed.
- stupration — an act of ravishing or a violation
- suborbital — (of a spacecraft) not in orbit; not achieving an altitude and velocity resulting in a ballistic trajectory circling the earth at least once.