13-letter words containing p, u, f, t
- step function — a function that is constant on each of a finite set of subintervals of its domain, the union of the subintervals being the domain.
- subprefecture — the office or position of subprefect
- sulfate paper — paper made from sulfate pulp.
- sulfite paper — paper made from sulfite pulp.
- superfetation — the fertilization of an ovum in a female mammal already pregnant.
- superfluidity — a fluid that exhibits frictionless flow, very high heat conductivity, and other unusual physical properties, helium below 2.186 K being the only known example.
- superfortress — a heavy, long-range, four-engined bomber used during World War II.
- superterrific — more than terrific
- surface plate — Machinery. a flat plate used by machinists for testing surfaces that are to be made perfectly flat.
- tablespoonful — the amount a tablespoon can hold.
- the cup final — the annual final of the FA Cup soccer competition, played at Wembley, or the Scottish Cup, played at Hampden Park
- triple figure — a number made up of three digits.
- turn of speed — If a person, animal, or vehicle has a good turn of speed, they have the ability to move fast.
- ultrapowerful — extremely powerful
- unperfectness — the state or quality of being imperfect
- unpitifulness — a lack or absence of pity
- venus flytrap — firewall machine
- yuppification — The act or process of yuppifying.