13-letter words containing a, u, s, o
- resuscitation — to revive, especially from apparent death or from unconsciousness.
- rhesus factor — Rh factor.
- rivalrousness — characterized by rivalry; competitive: the rivalrous aspect of their friendship.
- road surveyor — a person who does surveying work for road building
- roger-ducasse — Jean Jules Amable [zhahn zhyl a-ma-bluh] /ʒɑ̃ ʒül aˈma blə/ (Show IPA), 1873–1954, French composer.
- rogue's march — a derisive tune played to accompany a person's expulsion from a regiment, community, etc.
- rose geranium — a geranium, Pelargonium graveolens, cultivated for its fragrant, lobed or narrowly divided leaves.
- rough as bags — uncouth
- rough passage — a stormy sea journey
- rousseauistic — the doctrines or principles of Jean Jacques Rousseau or his adherents.
- roxas y acuña — Manuel (maˈnwel). 1892–1948, Philippine statesman; first president of the Republic of the Philippines (1946–48)
- russian olive — oleaster.
- russification — Russianize (defs 1, 2).
- saint columba — Padraic [paw-drik] /ˈpɔ drɪk/ (Show IPA), 1881–1972, Irish poet and dramatist, in the U.S. from 1914.
- salviniaceous — relating to the genus Salviniaceae
- sanctimonious — making a hypocritical show of religious devotion, piety, righteousness, etc.: They resented his sanctimonious comments on immorality in America.
- 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.
- santos-dumont — Alberto [ahl-ber-too] /ɑlˈbɛr tʊ/ (Show IPA), 1873–1932, Brazilian aeronaut in France: designer and builder of dirigibles and airships.
- saurognathous — related to or resembling the Saurognathae family of birds that possess palate bones similar to those in saurians or lizards
- schizaeaceous — relating to a type of extinct fern
- sclerocaulous — having a hard, dry stem
- sea buckthorn — a thorny Eurasian shrub, Hippophaë rhamnoides, growing on sea coasts and having silvery leaves and orange fruits: family Elaeagnaceae
- second nature — an acquired habit or tendency in one's character that is so deeply ingrained as to appear automatic: Neatness is second nature to him.
- see you later — an expression of farewell
- selenous acid — a colorless, transparent, crystalline powder, H2SeO3, soluble in water and used as a reagent
- semi-autonomy — the quality or state of being semiautonomous.
- semiautomated — partially automated.
- semiautomatic — partly automatic.
- semioviparous — bearing young in an incomplete state of development, as a marsupial.
- sensate focus — a series of touching exercises designed to increase intimacy in a sexual relationship
- sensorineural — related to or affecting a sensory nerve or a sensory mechanism together with its neural circuitry.
- sequestration — removal or separation; banishment or exile.
- sex education — Sex education is education in schools on the subject of sexual activity and sexual relationships.
- sexualization — to render sexual; endow with sexual characteristics.
- share account — a savings account in a credit union.
- sharp-tongued — characterized by or given to harshness, bitterness, or sarcasm in speech.
- shaver outlet — a point in a wall, esp in a bathroom, where you can connect an electric razor to the power supply
- she-crab soup — a thick, bisquelike soup made with the meat and eggs of the female crab.
- shear modulus — The shear modulus of a material is how stiff or rigid it is. It is equal to the shear stress divided by the shear strain.
- shockumentary — a television programme showing members of the public in shocking or violent situations
- short account — the account of a short seller.
- shoulder arms — to bring the rifle vertically close to the right side with the muzzle uppermost and held at the trigger guard
- shrove sunday — the Sunday before Ash Wednesday; Quinquagesima.
- sidereal hour — a 24th part of a sidereal day
- singular noun — A singular noun is a noun such as 'standstill' or 'vicinity' that does not have a plural form and always has a determiner such as 'a' or 'the' in front of it.
- sinistrocular — favoring the left eye, rather than the right, by habit or for effective vision (opposed to dextrocular).
- situationally — manner of being situated; location or position with reference to environment: The situation of the house allowed for a beautiful view.
- small fortune — a large sum of money
- snowball bush — guelder rose.
- social column — a column in a newspaper or magazine that details the activities of members of fashionable society