12-letter words containing e, r, o, s, i
- siderography — the art or technique of engraving on steel.
- siderophilic — having characteristics of siderophile
- sierra leone — an independent republic in W Africa: member of the Commonwealth of Nations; formerly a British colony and protectorate. 27,925 sq. mi. (72,326 sq. km). Capital: Freetown.
- signal tower — a tower from which railway signals are controlled or displayed
- siliciferous — containing, combined with, or producing silica.
- silky cornel — a cornel, Cornus amomum, of the eastern U.S., having leaves covered with short, silky hairs on the underside and bearing blue berries.
- silver frost — glaze (def 17).
- silver mound — a perennial Japanese herb, Artemisia schmidtiana, having silver-green leaves forming a moundlike shape.
- silver point — the melting point of silver, equal to 960.8°C, used as a fixed point on the international temperature scale.
- silver spoon — spoon (def 16).
- silver trout — a variety of cutthroat trout, Salmo clarki henshawi, having silvery coloration, inhabiting Lake Tahoe.
- simon legree — Simon, Simon Legree.
- simple group — a group that has no normal subgroup except the group itself and the identity.
- single-cross — a cross between two inbred lines.
- siphonophore — any pelagic hydrozoan of the order Siphonophora, being a floating or swimming colony composed of polyps.
- six-year-old — being six years in age
- sixth former — student: 16-18
- skeletonizer — any of numerous insect species that reduce leaves to a skeleton
- skeuomorphic — an ornament or design on an object copied from a form of the object when made from another material or by other techniques, as an imitation metal rivet mark found on handles of prehistoric pottery.
- ski trousers — warm padded trousers used for skiing
- slipper foot — an elongated pad foot.
- slipper sock — a sock with a soft leather or vinyl sole sewn onto it, used as indoor footwear.
- sloganeering — Sloganeering is the use of slogans by people such as politicians or advertising agencies.
- sloop-rigged — (of a sailboat) fore-and-aft rigged with a mainsail and a jib.
- smart cookie — intelligent or sharp-witted person
- smoking area — a designated area in which smoking is permitted
- smotheriness — the condition or state of smothering
- smotheringly — in a smothering manner
- sober-minded — rational; sensible.
- soboliferous — bearing or producing soboles
- soccer pitch — the field of play used in soccer
- social order — structure or hierarchy of society
- sociocentric — oriented toward or focused on one's own social group.
- soil profile — a vertical succession of horizons, commonly lettered A, B, C (beginning at the surface), that have been subjected to soil-forming processes, chiefly leaching and oxidation.
- soldier crab — a small blue Australian estuarine crab of the Mictyris genus usually found in large numbers
- solid figure — a figure that has three dimensions
- solid rocket — any of various rockets using solid fuel
- solitariness — alone; without companions; unattended: a solitary passer-by.
- solitary bee — any of numerous bees, as the leaf-cutting bees, that do not live in a community.
- somers point — a town in SE New Jersey.
- soporiferous — bringing sleep; soporific.
- sorbefacient — inducing absorption
- sorosilicate — any of the silicates in which each silicate tetrahedron shares one of its four oxygen atoms with a neighboring tetrahedron, the ratio of silicon to oxygen being two to seven.
- sorting code — a sequence of numbers printed on a cheque or embossed on a bank or building-society card that identifies the branch holding the account
- special sort — a character, such as an accented letter, that is not a usual member of any font
- specksioneer — a whaler
- spectatorial — a person who looks on or watches; onlooker; observer.
- spermagonium — Botany, Mycology. spermogonium.
- spermatocide — spermicide.
- spermatozoid — a motile male gamete produced in an antheridium.