21-letter words starting with s
- s-k reduction machine — An abstract machine defined by Professor David Turner to evaluate combinator expressions represented as binary graphs. Named after the two basic combinators, S and K.
- safe in the knowledge — If you do something safe in the knowledge that something else is the case, you do the first thing confidently because you are sure of the second thing.
- sail against the wind — to sail a course that slants slightly away from the true direction of the wind; sail closehauled
- saint anthony's cross — tau cross.
- saint elias mountains — a mountain range between SE Alaska and the SW Yukon, Canada. Highest peak: Mount Logan, 5959 m (19 550 ft)
- saint lawrence seaway — a series of channels, locks, and canals between Montreal and the mouth of Lake Ontario, a distance of 182 miles (293 km), enabling most deep-draft vessels to travel from the Atlantic Ocean, up the St. Lawrence River, to all the Great Lakes ports: developed jointly by the U.S. and Canada.
- saint martin's summer — mild, warm weather similar to Indian summer, occurring in November.
- saint valentine's day — February 14, observed in honor of St. Valentine as a day for the exchange of valentines and other tokens of affection.
- saint-maur-des-fosses — a town in N central France, near Paris, on the Marne River.
- salam-weinberg theory — the electroweak theory.
- sales finance company — a finance company that purchases, at a discount, installment contracts from dealers or that finances retail sales.
- sampling distribution — the distribution of a statistic based on all possible random samples that can be drawn from a given population.
- san gabriel mountains — a mountain range in S California, N of Los Angeles. Highest peak, San Antonio Peak, 10,080 feet (3072 meters).
- san gorgonio mountain — a mountain in S California: highest peak in the San Bernardino Mountains. 11,502 feet (3506 meters).
- sanitation department — the department of local government responsible for collecting and disposing of refuse
- santa barbara islands — group of nine islands, & many islets, off the SW coast of Calif.
- santa cruz water lily — a South American aquatic plant, Victoria cruziana, of the water lily family, having floating leaves from 2–5 feet (0.6–1.5 meters) and deep pink or red flowers.
- santo tome de guayana — a city in NE Venezuela, on the Orinoco River.
- sao bernardo do campo — a city in SE Brazil, SE of São Paulo.
- sao jose do rio preto — a city in SE Brazil, NW of São Paulo.
- sao tome and principe — Democratic Republic of, a republic in W Africa, comprising the islands of São Tomé and Príncipe, in the Gulf of Guinea, N of the equator: a former overseas province of Portugal; gained independence in 1975. 372 sq. mi. (964 sq. km). Capital: São Tomé.
- saponification number — the number of milligrams of potassium hydroxide required to saponify one gram of a given ester, especially a glyceride.
- satellite dish aerial — a parabolic aerial for reception from or transmission to an artificial satellite
- satisficing behaviour — the form of behaviour demonstrated by firms who seek satisfactory profits and satisfactory growth rather than maximum profits
- saving your reverence — a form of apology for using an obscene or taboo expression
- sb/sth reigns supreme — Someone or something that reigns supreme is the most important or powerful element in a situation or period of time.
- scalar multiplication — an operation used in the definition of a vector space in which the product of a scalar and a vector is a vector, the operation is distributive over the addition of both scalars and vectors, and is associative with multiplication of scalars
- scalar triple product — the volume of the parallelepiped defined by three given vectors, u, v, and w, usually represented as u·v 1 (v×w), [ uvw ], or (uvw), where × denotes a cross product and · denotes an inner product.
- scarce as hen's teeth — extremely rare
- scarlet monkey flower — any of various plants belonging to the genus Mimulus, of the figwort family, as M. cardinalis (scarlet monkey flower) having spotted flowers that resemble a face.
- scarlet runner (bean) — a climbing bean plant (Phaseolus coccineus) of tropical America, having pods with large, edible, red-and-black seeds and usually having scarlet flowers: often grown in cold climates as an ornamental
- schema definition set — (SDS) Something in Portable Common Tool Environment.
- schlieren photography — a type of photography which records schlieren
- scholastic philosophy — the system of philosophy, theology, and teaching that dominated medieval western Europe and was based on the writings of the Church Fathers and (from the 12th century) Aristotle, the Greek philosopher (384–322 bc)
- school of hard knocks — the experience gained from living, especially from disappointment and hard work, regarded as a means of education: The only school he ever attended was the school of hard knocks.
- school of the soldier — an institution where instruction is given, especially to persons under college age: The children are at school.
- school superintendent — an official whose job is to oversee school administration within a district
- schoolgirl complexion — a smooth, clear complexion, such as schoolgirls are considered to have
- science correspondent — a newspaper or television journalist who specializes in reporting on new discoveries in science
- scientific empiricism — the philosophy that there are no real differences between the sciences.
- scintillation counter — a device for detecting and measuring radioactivity, having a crystal scintillator, a photoelectric cell sensitive to the light from scintillations, and an amplifier.
- scorched earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
- scorched-earth policy — a military practice of devastating the property and agriculture of an area before abandoning it to an advancing enemy.
- sealed-beam headlight — a headlight in which the reflector and lens are hermetically sealed together with the filament in a single unit.
- seating accommodation — the provision of seats for people in a room, building, etc
- second-hand endowment — A second-hand endowment is a traditional with-profits endowment policy that has been sold to a new owner part way through its term.
- secondary containment — Secondary containment is a system for dealing with hazardous spills.
- secure hash algorithm —
- sedimentary sequences — Sedimentary sequences are layers of rock which are derived from weathered rocks, biogenic (= of living organisms) activity, or precipitation from solution.
- seeing/hearing things — If you say that someone is seeing or hearing things, you mean that they believe they are seeing or hearing something that is not really there.
On this page, we collect all 21-letter words starting with letter S. It’s easy to find right word with a certain length. It is the easiest way to find 21-letter word that beginning with S to use in Scrabble or Crossword puzzles.