9-letter words containing i, p, r, o
- strap-oil — a beating
- strip off — remove clothes
- strip out — to remove the working parts of (a machine)
- strophoid — a plane curve generated by the loci of points p and pprime; on a straight line that intersects the y-axis at a point n and the minus x-axis at a fixed point q, such that pn = npprime; = on, as on changes, where o is the origin. Equation: y 2 = x 2 (x + a)/(a − x).
- subperiod — a subdivision of a time period
- supercoil — superhelix.
- supinator — a muscle used in supination.
- temporise — to be indecisive or evasive to gain time or delay acting.
- temporize — to be indecisive or evasive to gain time or delay acting.
- tephroite — a mineral, silicate of manganese, Mn 2 SiO 4 , occurring in orthorhombic crystals.
- terpenoid — a class of chemical compounds including all terpenes
- terpineol — any of several unsaturated, cyclic, tertiary alcohols having the formula C 10 H 18 O, occurring in nature in many essential oils or prepared synthetically: used chiefly in the manufacture of perfumes.
- tightrope — a rope or wire cable, stretched tight, on which acrobats perform feats of balancing.
- time-poor — lacking spare time or leisure time
- tiptronic — a type of gearbox that has both automatic and manual options
- top fruit — fruit that grows on trees
- top-liner — an entertainer who is important enough to be the star of a show
- top-sider — a casual shoe, often made of canvas, having a nonskid rubber sole
- torpidity — inactive or sluggish.
- trapezoid — Geometry. a quadrilateral plane figure having two parallel and two nonparallel sides. British. trapezium (def 1b).
- trimphone — a phone designed in the 1960s
- tripleton — (especially in bridge) a set of three cards of the same suit in a hand as dealt.
- triploidy — the condition of being triploid
- tritanope — a person who cannot distinguish the colour blue
- troopship — a ship for the conveyance of military troops; transport.
- troparion — (in the Greek Orthodox Church) a verse or short hymn
- tropeolin — any of a number of orange or yellow azo dyes of complex molecular structure.
- turkophil — a person who favors or admires Turkey, Turkish customs, or Turks.
- turophile — a connoisseur or lover of cheese.
- tutorship — a person employed to instruct another in some branch or branches of learning, especially a private instructor.
- tyropitta — a Greek cheese pie
- uniparous — Zoology. producing only one egg or offspring at a time.
- unprovide — to fail to supply necessary requirements or provisions; to divest
- up for it — keen or willing to try something out or make a good effort
- uropygial — of or relating to the uropygium.
- uropygium — the projecting terminal portion of a bird's body, from which the tail feathers spring.
- vaporific — producing vapor; tending to form vapor.
- vaporings — instances of boasting
- vaporizer — a person or thing that vaporizes.
- vertiport — a type of airport for aircrafts which land and take off vertically
- videoporn — pornographic movies available on videocassette or optical disk, on the Internet, or on subscription television.
- whip roll — a roller, located at the back of a loom, that guides the warp ends as they come up from the warp beam on their way to the harness.
- whipcordy — resembling a whipcord
- whipworms — Plural form of whipworm.
- whirlpool — water in swift, circular motion, as that produced by the meeting of opposing currents, often causing a downward spiraling action.
- willpower — control of one's impulses and actions; self-control.
- windpower — Power harnessed or generated from the wind.
- windproof — resisting wind, as fabric or a jacket or coat.
- wire rope — a rope made of or containing strands of wire twisted together.
- wirephoto — a device for transmitting photographs over distances by wire. a photograph so transmitted.