13-letter words containing m, o, n, a
- ribosomal rna — a type of RNA, distinguished by its length and abundance, functioning in protein synthesis as a component of ribosomes. Abbreviation: rRNA.
- roentgenogram — a photograph made with x-rays.
- roman holiday — a public spectacle or controversy marked by barbarism, vindictiveness, or scandal.
- roman letters — a typeface used in ancient Roman inscriptions
- roman numeral — one of the numerals in the ancient Roman system of notation, still used for certain limited purposes, as in some pagination, dates on buildings, etc. The common basic symbols are I, (=1), V, (=5), X, (=10), L, (=50), C, (=100), D, (=500), and M, (=1000). The Roman numerals for one to nine are: I, II, III, IV, V, VI, VII, VIII, IX. A bar over a letter multiplies it by 1000; thus, X̅ equals 10,000. Integers are written according to these two rules: If a letter is immediately followed by one of equal or lesser value, the two values are added; thus, XX equals 20, XV equals 15, VI equals 6. If a letter is immediately followed by one of greater value, the first is subtracted from the second; thus, IV equals 4, XL equals 40, CM equals 900. Examples: XLVII(=47), CXVI(=116), MCXX(=1120), MCMXIV(=1914). Roman numerals may be written in lowercase letters, though they appear more commonly in capitals.
- 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.
- rond de jambe — a circular movement of the leg.
- 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
- round kumquat — an evergreen, citrus shrub or small tree, Fortunella japonica, of Japan, having blunt, broad leaves and globe-shaped, edible fruit.
- royal marines — a corps of soldiers specially trained in amphibious warfare
- saint columba — Padraic [paw-drik] /ˈpɔ drɪk/ (Show IPA), 1881–1972, Irish poet and dramatist, in the U.S. from 1914.
- saint-émilion — a dry claret wine from the parish of St.-Émilion in the Bordeaux region of France.
- salmon ladder — a series of steps in a river designed to enable salmon to bypass a dam and move upstream to their breeding grounds
- salmonellosis — food poisoning caused by consumption of food contaminated with bacteria of the genus Salmonella, characterized by the sudden onset of abdominal pain, vomiting, diarrhea, and fever.
- salpingectomy — excision of the Fallopian tube.
- salpingostomy — the formation of an artificial opening into a Fallopian tube.
- sanctimonious — making a hypocritical show of religious devotion, piety, righteousness, etc.: They resented his sanctimonious comments on immorality in America.
- 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
- sanitationman — a sanitation worker.
- sansculottism — (in the French Revolution) a revolutionary of the poorer class: originally a term of contempt applied by the aristocrats but later adopted as a popular name by the revolutionaries.
- santo domingo — a republic in the West Indies, occupying the E part of the island of Hispaniola. 19,129 sq. mi. (49,545 sq. km). Capital: Santo Domingo.
- santos-dumont — Alberto [ahl-ber-too] /ɑlˈbɛr tʊ/ (Show IPA), 1873–1932, Brazilian aeronaut in France: designer and builder of dirigibles and airships.
- scandalmonger — a person who spreads scandal or gossip.
- scarlet woman — a sexually promiscuous woman, especially a prostitute or a woman who commits adultery.
- sedimentation — the deposition or accumulation of sediment.
- self-enamored — to fill or inflame with love (usually used in the passive and followed by of or sometimes with): to be enamored of a certain lady; a brilliant woman with whom he became enamored.
- semi-autonomy — the quality or state of being semiautonomous.
- semi-nomadism — a member of a people or tribe that has no permanent abode but moves about from place to place, usually seasonally and often following a traditional route or circuit according to the state of the pasturage or food supply.
- semicarbazone — a product that occurs as a result of aldehyde or ketone reacting with semicarbazide
- semidominance — incomplete dominance.
- seminole wars — a series of conflicts in 1818–19 between American forces under Andrew Jackson and the Seminole Indians in Spanish-controlled eastern Florida.
- semipalmation — the state of being semipalmate
- 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
- sex chromatin — Barr body.
- shell company — A shell company is a company that another company takes over in order to use its name to gain an advantage.
- shockumentary — a television programme showing members of the public in shocking or violent situations
- shop chairman — a unionized employee elected to represent a shop, department, or the like, in dealings with an employer.
- shopping mall — mall (def 1).
- shrove monday — the Monday before Ash Wednesday.
- sierra morena — a mountain range in SW Spain, between the Guadiana and Guadalquivir Rivers. Highest peak: Estrella, 1299 m (4262 ft)
- silla kingdom — an ancient Korean state that unified Korea; flourished in the 7th–10th centuries a.d.
- 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.