12-letter words containing c, h, o, r, a
- rachiotomies — Plural form of rachiotomy.
- rachmaninoff — Sergei Wassilievitch [sur-gey vuh-seel-yuh-vich;; Russian syir-gyey vuh-syee-lyi-vyich] /sɜrˈgeɪ vəˈsil yə vɪtʃ;; Russian syɪrˈgyeɪ vʌˈsyi lyɪ vyɪtʃ/ (Show IPA), 1873–1943, Russian pianist and composer.
- racing homer — a kind of homing pigeon used for racing
- rappahannock — a river flowing SE from N Virginia into the Chesapeake Bay: Civil War battle 1863. 185 miles (300 km) long.
- ratchet down — If something ratchets down or is ratcheted down, it decreases by a fixed amount or degree, and seems unlikely to increase again.
- rear echelon — (in a military operation) the troops, officers, etc., removed from the combat zone and responsible for administration, matériel, etc.
- reproachable — to find fault with (a person, group, etc.); blame; censure.
- reproachless — irreproachable.
- retrophiliac — someone who has a strong liking for things from the past
- rhamphotheca — the horny covering of a bird's bill.
- rhetorically — used for, belonging to, or concerned with mere style or effect.
- rhinocerical — of or relating to the rhinoceros
- rhizocarpous — having the root perennial but the stem annual, as perennial herbs.
- rhopaloceral — of or relating to creatures from the Rhopalocera division of animals, which includes all butterflies, distinguished from moths on account of their club-shaped antennae
- rhyncophoran — any of various beetles, including the weevils, having the head extended to form a snout
- richard korf — (person) A Professor of computer science at the University of California, Los Angeles. Richard Korf received his B.S. from MIT in 1977, and his M.S. and Ph.D. in computer science from Carnegie-Mellon University in 1980 and 1983. From 1983 to 1985 he served as Herbert M. Singer Assistant Professor of Computer Science at Columbia University. Dr. Korf studies problem-solving, heuristic search and planning in artificial intelligence. He wrote "Learning to Solve Problems by Searching for Macro-Operators" (Pitman, 1985). He serves on the editorial boards of Artificial Intelligence, and the Journal of Applied Intelligence. Dr. Korf is the recipient of several awards and is a Fellow of the American Association for Artificial Intelligence.
- roller chain — a power chain consisting of parallel pairs of flat links joined by pins covered with rollers, and engaging with the teeth of sprockets.
- router patch — a plywood panel patch with parallel sides and rounded ends.
- saccharoidal — having a crystalline or granular texture: said esp. of some sandstones and marbles
- sacher torte — a chocolate cake covered with apricot jam and chocolate icing, usually served with whipped cream.
- sarcophagous — carnivorous.
- scatter shot — shot prepared for a weapon having a rifled bore or barrel.
- scenographic — the art of representing objects in accordance with the rules of perspective.
- schizocarpic — a dry, dehiscent fruit that at maturity splits into two or more one-seeded carpels.
- school board — a local board or committee in charge of public education.
- school prawn — a common olive-green prawn, Metapenaeus macleayi
- school shark — an Australian shark resembling the tope, Notogaleus australis
- schoolmaster — a man who presides over or teaches in a school.
- schopenhauer — Arthur [ahr-too r] /ˈɑr tʊər/ (Show IPA), 1788–1860, German philosopher.
- scotch grain — a coarse, pebble-grained finish given to heavy leather, esp. for men's shoes
- scratch coat — (in plastering) a rough, deeply scored first coat upon which the brown coat is laid.
- scratchboard — a cardboard coated with impermeable white clay and covered by a layer of ink that is scratched or scraped in patterns revealing the white surface below.
- scratchproof — resistant to scratches.
- scrophularia — a member of a genus of flowering plants which have a square stem and are known as figworts
- search order — an injunction allowing a person to enter the premises of another to search for and take copies of evidence required for a court case, used esp in cases of infringement of copyright
- shadow price — the calculated price of a good or service for which no market price exists
- shamrock-pea — a trailing plant, Parochetus communis, of the legume family, native to Asia and east Africa, having shamrocklike leaves with a brown crescent at the base and pea-shaped, pink and blue flowers.
- sharecropper — a tenant farmer who pays as rent a share of the crop.
- shared logic — the sharing of a central processing unit and associated software among several terminals
- shatter cone — a cone-shaped fragment of rock, probably formed by violent shock waves, as from meteoritic impact or atomic explosions
- shawl collar — a rolled collar and lapel in one piece that curves from the back of the neck down to the front closure of a single-breasted or double-breasted garment.
- sheet anchor — Nautical. a large anchor used only in cases of emergency.
- short-acting — (of a drug) quickly effective, but requiring regularly repeated doses for long-term treatment, being rapidly absorbed, distributed in the body, and excreted
- short-change — to give less than the correct change to.
- shortchanged — to give less than the correct change to.
- sociographic — the branch of sociology that uses statistical data to describe social phenomena.
- soft chancre — chancroid.
- sophomorical — characteristic of a sophomore
- south africa — Republic of, a country in S Africa; member of the Commonwealth of Nations until 1961. 472,000 sq. mi. (1,222,480 sq. km). Capitals: Pretoria and Cape Town.
- spectrograph — a spectroscope for photographing or producing a representation of a spectrum.