9-letter words containing o, a, k, r, i
- raskolnik — a member of any of several sects founded by dissenters from the Russian Orthodox Church who opposed the liturgical reforms of Nikon in the 17th century.
- road bike — a bike designed to be ridden on roads, as opposed to a mountain bike
- road kill — Informal. the body of an animal killed on a road by a motor vehicle.
- silk road — ancient trade route extending from China to the Mediterranean
- skid road — an area of cheap barrooms and run-down hotels, frequented by alcoholics and vagrants.
- skimboard — a type of short, rounded surfboard used for riding in shallow water.
- stairwork — unseen plotting
- stinkaroo — something markedly inferior in quality: a stinkaroo of a motion picture.
- tokharian — a member of a central Asian people of high culture, who were assimilated with other peoples about the 11th century a.d.
- urokinase — an enzyme, present in the blood and urine of mammals, that activates plasminogen and is used medicinally to dissolve blood clots.
- workalike — (computing) A computer capable of running software designed for another.
- wronskian — the determinant of order n associated with a set of n functions, in which the first row consists of the functions, the second row consists of the first derivatives of the functions, the third row consists of their second derivatives, and so on.