15-letter words containing a, h, o, r
- right ascension — the arc of the celestial equator measured eastward from the vernal equinox to the foot of the great circle passing through the celestial poles and a given point on the celestial sphere, expressed in degrees or hours.
- right of asylum — the right of alien fugitives to protection or nonextradition in a country or its embassy.
- right of search — the privilege of a nation at war to search neutral ships on the high seas for contraband or other matter, carried in violation of neutrality, that may subject the ship to seizure.
- right-hand buoy — a distinctive buoy marking the side of a channel regarded as the right, or starboard, side.
- rightabout-face — a turning directly about so as to face in the opposite direction
- robe-de-chambre — a dressing gown.
- rocket launcher — a tube attached to a weapon for the launching of rockets.
- rocket research — research into rocket engines for spacecraft
- roentgenography — roentgenogram.
- roll in the hay — a document of paper, parchment, or the like, that is or may be rolled up, as for storing; scroll.
- root and branch — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
- root-and-branch — a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture.
- rough and ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
- rough bluegrass — a grass, Poa trivialis, native to Eurasia and naturalized in North America, where it is used in mixtures for lawns and pasturage.
- rough breathing — the symbol (ʿ) used in the writing of Greek to indicate aspiration of the initial vowel or of the ρ (rho) over which it is placed.
- rough-and-ready — rough, rude, or crude, but good enough for the purpose: a rough-and-ready estimate of future expenses.
- round character — a character in fiction whose personality, background, motives, and other features are fully delineated by the author.
- roundheadedness — the state of having a round head
- rowland heights — a city in SW California, near Los Angeles.
- rubbing alcohol — a poisonous solution of about 70 percent isopropyl or denatured ethyl alcohol, usually containing a perfume oil, used chiefly in massaging.
- rutherford atom — the atom postulated as analogous to the solar system, with electrons revolving around a small, central, positive nucleus that constitutes practically the entire mass of the atom
- saccharomycetes — a collective name for yeasts
- sacred mushroom — any of various hallucinogenic mushrooms, esp species of Psilocybe and Amanita, that have been eaten in rituals in various parts of the world
- sailor's choice — any of various small percoid fishes of American coastal regions of the Atlantic, esp the grunt Haemulon parra and the pinfish
- sailor's-choice — any of several fishes living in waters along the Atlantic coast of the U.S., especially a pinfish, Lagodon rhomboides, ranging from Massachusetts to Texas, and a grunt, Haemulon parrai, ranging from Florida to Brazil.
- sandwich course — A sandwich course is an educational course in which you have periods of study between periods of being at work.
- saprophytically — any organism that lives on dead organic matter, as certain fungi and bacteria.
- sarcenchymatous — relating to the connective tissue of some sponges
- scared to death — terrified
- scatter cushion — Scatter cushions are small cushions for use on sofas and chairs.
- schillerization — the process of altering crystals to produce schiller
- schola cantorum — an ecclesiastical choir or choir school.
- schopenhauerian — Arthur [ahr-too r] /ˈɑr tʊər/ (Show IPA), 1788–1860, German philosopher.
- schopenhauerism — the philosophy of Schopenhauer, who taught that only the cessation of desire can solve the problems arising from the universal impulse of the will to live.
- scrape together — to deprive of or free from an outer layer, adhering matter, etc., or to smooth by drawing or rubbing something, especially a sharp or rough instrument, over the surface: to scrape a table to remove paint and varnish.
- scratching post — a block or post of wood, usually covered with carpeting, on which a cat can use its claws.
- self-abhorrence — a feeling of extreme repugnance or aversion; utter loathing; abomination.
- self-authorized — given or endowed with authority: an authorized agent.
- semilogarithmic — (of graphing) having one scale logarithmic and the other arithmetic or of uniform gradation.
- semipornography — partial pornography; material that is almost pornographic
- separate school — (in Canada) a school for a large religious minority financed by its rates and administered by its own school board but under the authority of the provincial department of education
- servo-mechanism — A servo-mechanism is a system or device that provides increased power to operate a control.
- shadow minister — a member of the main opposition party in Parliament who would hold ministerial office if their party were in power
- share ownership — the owning of shares in a company
- sharing economy — a system in which people rent, borrow, or share commodities, services, and resources owned by individuals, usually with the aid of online technology, in an effort to save money, cut costs, and reduce waste.
- shelikof strait — a strait between the Alaska Peninsula and Kodiak Island, in S Alaska. 130 miles (209 km) long and 30 miles (48 km) wide.
- shock probation — the release on probation of a criminal after brief imprisonment
- shock resistant — not affected by impact
- shock treatment — electroconvulsive therapy
- shock-resistant — strong or resilient enough to sustain minor impacts without damage to the internal mechanism: a shock-resistant watch.