13-letter words containing o, m, n, i, r
- rhythmization — the act or process of rhythmizing something
- ribosomal rna — a type of RNA, distinguished by its length and abundance, functioning in protein synthesis as a component of ribosomes. Abbreviation: rRNA.
- richmond hill — a town in SE Ontario, in S Canada, N of Toronto.
- ring compound — a compound whose structural formula contains a closed chain or ring of atoms; a cyclic compound. Compare cyclic (def 3).
- rock climbing — the sport of climbing sheer rocky surfaces on the sides of mountains, often with the aid of special equipment.
- roman holiday — a public spectacle or controversy marked by barbarism, vindictiveness, or scandal.
- romantic lead — a person who plays the main character in a romantic film or play
- romantic love — love characterized by romance and involving sexual attraction
- romanticality — the state or quality of being romantic
- romanticising — to make romantic; invest with a romantic character: Many people romanticize the role of an editor.
- rooming house — a house with furnished rooms to rent; lodging house.
- rose geranium — a geranium, Pelargonium graveolens, cultivated for its fragrant, lobed or narrowly divided leaves.
- rose mandarin — (in the Chinese Empire) a member of any of the nine ranks of public officials, each distinguished by a particular kind of button worn on the cap.
- rough diamond — gemstone: uncut diamond
- roughing mill — a rolling mill for converting steel ingots into blooms, billets, or slabs.
- royal marines — a corps of soldiers specially trained in amphibious warfare
- rum rebellion — the deposition of Governor William Bligh in 1808 by officers of the New South Wales Corps, caused by his interference in their trading activities, esp in the trafficking of rum
- rumelgumption — commonsense
- rumlegumption — commonsense
- sanction mark — a mark on pieces of 19th-century French furniture signifying that the piece met the quality standards required by the Parisian guild of ebonists
- scout uniform — the uniform worn by the Scouts
- second empire — the empire established in France (1852–70) by Louis Napoleon: the successor to the Second Republic.
- selenotropism — growth in response to moonlight.
- semicarbazone — a product that occurs as a result of aldehyde or ketone reacting with semicarbazide
- semiconductor — a substance, as silicon or germanium, with electrical conductivity intermediate between that of an insulator and a conductor: a basic component of various kinds of electronic circuit element (semiconductor device) used in communications, control, and detection technology and in computers.
- seminole wars — a series of conflicts in 1818–19 between American forces under Andrew Jackson and the Seminole Indians in Spanish-controlled eastern Florida.
- semiporcelain — any of several vitrified ceramic wares lacking the translucency or hardness of true porcelain but otherwise similar to it.
- senior airman — a noncommissioned officer ranking between a staff sergeant and airman first class. Abbreviation: SrA.
- senior master — a male teacher in a senior position
- senior moment — a brief lapse in memory or a moment of confusion, especially in an older person.
- sensitometric — of or relating to sensitometry
- sex chromatin — Barr body.
- shipping room — a place in a business concern where goods are packed and shipped.
- shop chairman — a unionized employee elected to represent a shop, department, or the like, in dealings with an employer.
- sierra morena — a mountain range in SW Spain, between the Guadiana and Guadalquivir Rivers. Highest peak: Estrella, 1299 m (4262 ft)
- silver salmon — coho salmon.
- simon bolivar — Simón [sahy-muh n;; Spanish see-mawn] /ˈsaɪ mən;; Spanish siˈmɔn/ (Show IPA), ("El Libertador") 1783–1830, Venezuelan statesman: leader of revolt of South American colonies against Spanish rule.
- single mother — a mother who brings up a child or children alone, without a partner.
- sociocentrism — oriented toward or focused on one's own social group.
- spanish broom — a spiny, often leafless shrub, Genista hispanica, of the legume family, native to southern Europe, having clustered, golden-yellow flowers and hairy pods.
- spermatogenic — relating to the development of spermatozoa
- spermatotoxin — spermotoxin.
- spider monkey — any of several tropical American monkeys of the genus Ateles, having a slender body, long, slender limbs, and a long, prehensile tail: some are endangered.
- sportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- sportsmanship — the character, practice, or skill of a sportsman.
- stain remover — a substance designed for removing stains or dirty marks, as from clothes, carpets, etc
- staminiferous — bearing or having a stamen or stamens.
- standing room — space in which to stand, as in a theater, stadium, or the like.
- stationmaster — a person in charge of a railroad station; station agent.
- storm warning — a showing of storm signals.