12-letter words containing f, o, r, t, i, s
- silver frost — glaze (def 17).
- sixth former — student: 16-18
- sixty-fourmo — a book size (about 2 × 3 inches; 5 × 7 cm) determined by printing on sheets folded to form 64 leaves or 128 pages.
- sixty-fourth — next after the sixty-third; being the ordinal number for 64.
- slipper foot — an elongated pad foot.
- solway firth — an arm of the Irish Sea between SW Scotland and NW England. 38 miles (61 km) long.
- sorbefacient — inducing absorption
- south africa — Republic of, a country in S Africa; member of the Commonwealth of Nations until 1961. 472,000 sq. mi. (1,222,480 sq. km). Capitals: Pretoria and Cape Town.
- sportfishing — fishing with a rod and reel for sport, especially for saltwater sport fish from a motorboat.
- stalactiform — resembling or shaped like a stalactite.
- stand in for — to substitute for
- stanniferous — containing tin; tin-bearing
- stelliferous — having or abounding with stars.
- stick up for — to pierce or puncture with something pointed, as a pin, dagger, or spear; stab: to stick one's finger with a needle.
- straight off — without a bend, angle, or curve; not curved; direct: a straight path.
- stratiformis — occurring in a very extensive horizontal layer.
- strike force — a military force armed and trained for attack.
- strobiliform — shaped as a strobilus
- subfactorial — the number of ways a group of objects can be arranged so that none of the objects are in their original or correct place
- suffruticose — woody at the base and herbaceous above.
- testificator — a person who witnesses
- thiosulfuric — of or derived from thiosulfuric acid.
- titaniferous — containing or yielding titanium.
- trace fossil — a fossilized track, trail, burrow, boring, or other structure in sedimentary rock that records the presence or behavior of the organism that made it.
- transfection — the insertion into a cell of a bacterial plasmid that contains a foreign virus or genetic material.
- transforming — to change in form, appearance, or structure; metamorphose.
- transformism — the doctrine of gradual transformation of one species into another by descent with modification through many generations.
- transformist — an adherent of transformism.
- transmogrify — to change in appearance or form, especially strangely or grotesquely; transform.
- tuberiferous — bearing or producing tubers
- tubuliferous — bearing or made up of tubules.
- unfortuitous — happening or produced by chance; accidental: a fortuitous encounter.
- vociferosity — the characteristic of being vociferous
- with-profits — A with-profits savings scheme or financial plan is one in which the people who put money into the scheme receive extra money each year based on how successful the investment has been.