7-letter words containing s, t, o, r
- trisomy — an abnormality characterized by the presence of an additional chromosome to the normal diploid number.
- troches — a small tablet or lozenge, usually a circular one, made of medicinal substance worked into a paste with sugar and mucilage or the like, and dried.
- trochus — (in ancient Greece and Rome) a hoop or wheel, as used in play or exercise
- troilus — a warrior son of Priam, mentioned by Homer and Vergil and later represented as the lover of Cressida.
- tropics — The tropics are the parts of the world that lie between two lines of latitude, the tropic of Cancer, 23½° north of the equator, and the tropic of Capricorn, 23½° south of the equator.
- tropism — an orientation of an organism to an external stimulus, as light, especially by growth rather than by movement.
- tropist — someone who uses tropes
- trotsky — Leon (Lev or Leib, Davidovich Bronstein) 1879–1940, Russian revolutionary and writer: minister of war 1918–25.
- trouser — of or relating to trousers or a trouser: trouser cuffs; a trouser seam.
- trustor — a person who creates a trust.
- tryouts — a trial or test to ascertain fitness for some purpose.
- tsardom — the domain of a czar.
- tsouris — trouble; woe.
- tussore — a tan silk from India. Compare Shantung (def 2a).
- twistor — a complex variable corresponding to the coordinates of a point in space and time
- unfrost — a degree or state of coldness sufficient to cause the freezing of water.
- unroost — to remove from a perch
- urmston — a town in NW England, in Trafford unitary authority, Greater Manchester. Pop: 40 964 (2001)
- visitor — a person who visits, as for reasons of friendship, business, duty, travel, or the like.
- vorster — Balthazar Johannes, 1915–83, South African political leader: prime minister 1966–78; president 1978–79.
- votress — a votaress.
- wooster — David, 1711–77, American Revolutionary War general.
- worsted — that which is worst.
- worstly — (rare, nonstandard) worst.
- xerotes — (pathology) A general dryness of the body.
- yogurts — Plural form of yogurt.
- yorkist — an adherent or member of the royal family of York, especially in the Wars of the Roses.
- zosters — Plural form of zoster.