13-letter words containing f, r, i, o
- rose of china — China rose (def 2).
- russification — Russianize (defs 1, 2).
- rutherfordium — a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Rf; atomic number: 104.
- safflower oil — an oil expressed or extracted fromsafflower seeds, used in cooking, as a salad oil, and as a vehicle for medicines, paints, varnishes, etc.
- san francisco — a seaport in W California, on San Francisco Bay: earthquake and fire 1906; United Nations Conference 1945.
- sao francisco — a river flowing NE and E through E Brazil into the Atlantic. 1800 miles (2900 km) long.
- sassafras oil — a yellowish or reddish-yellow, aromatic volatile oil distilled from sassafras root, used in flavoring, perfumery, and medicine.
- scalariformly — in a scalariform or ladder-like manner
- scalpelliform — having the shape of a scalpel blade
- scarfed joint — a lapped joint between two pieces of timber made by notching or grooving the ends and strapping, bolting, or gluing the two pieces together
- scarification — an act or instance of scarifying.
- school figure — (in ice skating) any one of a group of sixty-nine different figures, skated in two- or three-circle figure-eight patterns, used to test various skating movements, a skater usually being required to perform six selected ones in competition.
- school friend — A school friend is a friend of yours who is at the same school as you, or who used to be at the same school when you were children.
- scimitar foot — any short leg or foot, as to a pedestal table, having the form of an arc tangent to the floor plane.
- scorification — an assaying process whereby gold or silver is separated from ore by fusion with lead.
- scorpion fish — any of several tropical and temperate marine scorpaenid fishes, especially members of the genus Scorpaena, many having venomous dorsal spines.
- scout uniform — the uniform worn by the Scouts
- self-creation — the act of producing or causing to exist; the act of creating; engendering.
- self-ignorant — lacking in knowledge or training; unlearned: an ignorant man.
- self-improver — improvement of one's mind, character, etc., through one's own efforts.
- self-ordained — to invest with ministerial or sacerdotal functions; confer holy orders upon.
- self-oriented — the Orient, the countries of Asia, especially East Asia. (formerly) the countries to the E of the Mediterranean.
- self-portrait — a portrait of oneself done by oneself.
- selling floor — floor (def 10).
- sheriff court — (in Scotland) a court having jurisdiction to try summarily or on indictment all but the most serious crimes and to deal with most civil actions
- significatory — serving to signify
- simplificator — a person who simplifies matters
- skin friction — the friction acting on a solid body when it is moving through a fluid
- soundproofing — materials used to make something soundproof
- soupfin shark — a requiem shark, Galeorhinus zyopterus, inhabiting the Pacific Ocean, valued for its fins, which are used by the Chinese in the preparation of a soup, and for its liver, which is rich in vitamin A.
- south african — of southern Africa.
- southern fish — the constellation Piscis Austrinus.
- spadicifloral — having flowers borne on a spadix
- special offer — bargain
- spider flower — cleome
- spinuliferous — relating to a spine or spines
- splendiferous — splendid; magnificent; fine.
- sponge finger — sweet finger-shaped biscuit
- staff officer — a commissioned officer who is a member of a staff.
- staffordshire — a county in central England. 1154 sq. mi. (2715 sq. km). County seat: Stafford.
- staminiferous — bearing or having a stamen or stamens.
- star of david — Judaism: six-pointed star
- stepford wife — a married woman who submits to her husband's will and is preoccupied by domestic concerns and her own personal appearance
- stick out for — If you stick out for something, you keep demanding it and do not accept anything different or less.
- stoloniferous — producing or bearing stolons.
- storax family — the plant family Styracaceae, characterized by trees and shrubs having simple, alternate leaves, clusters of bell-shaped white flowers, and fleshy or dry fruit, and including the silver bell, snowbell, and storax.
- straightforth — straight or directly forward
- strombuliform — in the shape of a coil
- sugar of milk — lactose.
- sunflower oil — oil obtained from sunflower seeds