13-letter words containing a, s, o, d
- saint leonard — a city in S Quebec, in E Canada: suburb of Montreal.
- salmon ladder — a series of steps in a river designed to enable salmon to bypass a dam and move upstream to their breeding grounds
- san ildefonso — a town in central Spain, near Segovia: termed the “Spanish Versailles” for its 18th-century palace (La Granja) treaty 1800.
- sandwich coin — a coin having a layer of one metal between outside layers of another, as a quarter with a layer of copper between layers of silver.
- sandwich loaf — a loaf of the type of soft white sliced bread often used to make sandwiches
- 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.
- sarcodinians' — belonging or pertaining to the protist phylum Sarcodina, comprising protozoa that move and capture food by forming pseudopodia.
- scalenohedral — a hemihedral crystal form of 8 or 12 faces, each face being a scalene triangle.
- scalenohedron — a hemihedral crystal form of 8 or 12 faces, each face being a scalene triangle.
- scandalmonger — a person who spreads scandal or gossip.
- 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
- scotland yard — a short street in central London, England: formerly the site of the London police headquarters, which were removed 1890 to a Thames embankment (New Scotland Yard, ).
- scratch video — the technique or practice of recycling images from films or television to make collages
- sealed orders — written instructions that are not to be read until a specified time
- second advent — Second Coming.
- second ballot — an electoral procedure in which if no candidate emerges as a clear winner in a first ballot, candidates at the bottom of the poll are eliminated and another ballot is held among the remaining candidates
- second banana — a comic who supports the leading comedian, often as a straight man, especially in burlesque or vaudeville.
- second estate — the second of the three estates: the nobles in France; the lords temporal in England. Compare estate (def 5).
- 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.
- second of arc — second2 (def 4).
- second papers — the documents by which an alien formerly made application for U.S. citizenship after having earlier filed a declaration of intention
- second reader — the elected official of a church or society who conducts services and reads from the Scriptures.
- second-grader — a pupil who is in the second grade
- secondary era — the period from the beginning of the Triassic to the end of the Cretaceous
- sectionalized — divided into sections
- sedimentation — the deposition or accumulation of sediment.
- selenous acid — a colorless, transparent, crystalline powder, H2SeO3, soluble in water and used as a reagent
- self-absorbed — preoccupied with one's thoughts, interests, etc.
- self-advocacy — the practice of having mentally handicapped people speak for themselves and control their own affairs, rather than having nonhandicapped people automatically assume responsibility for them
- self-anointed — to rub or sprinkle on; apply an unguent, ointment, or oily liquid to.
- self-donation — an act or instance of presenting something as a gift, grant, or contribution.
- 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.
- self-ordained — to invest with ministerial or sacerdotal functions; confer holy orders upon.
- 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.
- semiautomated — partially automated.
- semidominance — incomplete dominance.
- send away for — order by post
- senza sordino — a musical direction to remove or play without the mute or (on the piano) with the sustaining pedal pressed down
- serodiagnosis — a diagnosis involving tests on blood serum or other serous fluid of the body.
- sex addiction — an addiction to sexual activity
- sex education — Sex education is education in schools on the subject of sexual activity and sexual relationships.
- shadow boxing — to make the motions of attack and defense, as in boxing, as a training or conditioning procedure.
- shadowcasting — the enhancement of images by the casting of shadows
- shaft encoder — A shaft encoder is a sensor for measuring how fast a shaft rotates.
- sharp-tongued — characterized by or given to harshness, bitterness, or sarcasm in speech.
- 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.
- shetland pony — one of a breed of small but sturdy, rough-coated ponies, raised originally in the Shetland Islands.
- shetland wool — the fine wool undercoat pulled by hand from Shetland sheep.
- shock and awe — US military: use of extreme force