15-letter words containing r, s, f
- software method — Software Methodology
- sons of freedom — a Doukhobor sect, located largely in British Columbia: notorious for its acts of terrorism in opposition to the government in the 1950s and 1960s
- sons of liberty — any of several patriotic societies, originally secret, that opposed the Stamp Act and thereafter supported moves for American independence.
- spanish trefoil — alfalfa.
- spare no effort — do all you can
- special feature — an article differing from the normal format and focusing on a particular topic
- specific charge — the ratio of the charge on a particle to the mass of the particle.
- spelling reform — an attempt to change the spelling of English words to make it conform more closely to pronunciation.
- spirits of salt — a solution of hydrochloric acid in water
- spirits of wine — alcohol (def 1).
- st. elmo's fire — St. Elmo's fire.
- st. ulmo's fire — St. Elmo's fire.
- stamford bridge — a village in N England, east of York: site of a battle (1066) in which King Harold of England defeated his brother Tostig and King Harald Hardrada of Norway, three weeks before the Battle of Hastings
- star of courage — a Canadian award for bravery
- starfish flower — carrion flower (def 2).
- start of header — (character) (SOH) mnemonic for ASCII 1.
- station officer — a person who is in charge of a fire station
- steam reforming — a process in which methane from natural gas is heated, with steam, usually with a catalyst, to produce a mixture of carbon monoxide and hydrogen used in organic synthesis and as a fuel
- sticky-fingered — given to thieving
- stiff upper lip — stoicism
- stocking filler — A stocking filler is a small present that is suitable for putting in a Christmas stocking.
- straightforward — going or directed straight ahead: a straightforward gaze.
- strait of canso — a channel in Canada, between the Nova Scotia mainland and S Cape Breton Island
- strait of dover — a strait between SE England and N France, linking the English Channel with the North Sea. Width: about 32 km (20 miles)
- strait of tiran — a strait between the Gulf of Aqaba and the Red Sea. Length: 16 km (10 miles). Width: 8 km (5 miles)
- streamline flow — the flow of a fluid past an object such that the velocity at any fixed point in the fluid is constant or varies in a regular manner.
- street fighting — violent and illegal fighting between individuals or groups
- stress fracture — a hairline crack in a bone, especially of a foot or leg, caused by repeated or prolonged stress and often occurring in runners, dancers, and soldiers (march fracture)
- strike the flag — to relinquish command, esp of a ship
- strombuliferous — having organs coiled as spirals
- subprofessional — being below professional standards: subprofessional health care.
- sulfite process — a process for making wood pulp by digesting wood chips in an acid liquor consisting of sulfurous acid and a salt, usually calcium bisulfite.
- sulfur trioxide — an irritant, corrosive, low-melting solid, SO 3 , obtained by the oxidation of sulfur dioxide, used as an intermediate in the manufacture of sulfuric acid.
- summary offence — an offence that is triable in a magistrates' court
- summer flounder — a flounder, Paralichthys dentatus, inhabiting shallow waters from Cape Cod to South Carolina, valued as food.
- sunflower seeds — the seeds of a sunflower, which can be eaten
- sunflower state — Kansas (used as a nickname).
- super-efficient — performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable: a reliable, efficient assistant.
- superconfidence — great or extreme confidence, overconfidence
- superefficiency — the quality or condition of being superefficient
- superficialness — being at, on, or near the surface: a superficial wound.
- superfluousness — being more than is sufficient or required; excessive.
- supporting film — a film that accompanies the main feature film in a film programme
- surface density — quantity, as of electric charge, per unit surface area.
- surface grammar — grammar understood at the level of normal communication, rather than at the underlying level of 'deep' semantic and syntactic analysis
- surface tension — the elasticlike force existing in the surface of a body, especially a liquid, tending to minimize the area of the surface, caused by asymmetries in the intermolecular forces between surface molecules.
- surface-ripened — (of cheese) ripened on the surface by molds or other microorganisms.
- sylvian fissure — lateral fissure.
- syngeneic graft — a tissue or organ transplanted from one member of a species to another, genetically identical member of the species, as a kidney transplanted from one identical twin to the other.
- tariff barriers — a barrier to trade between certain countries or geographical areas which takes the form of abnormally high taxes levied by a government on imports or occasionally exports for purposes of protection, support of the balance of payments, or the raising of revenue