9-Letter Words Containing: R,O,S,T,R,A

• A form of igneous rock that tends to form polygonal vertical fractures.

• larva of the caddis fly; constructs a case of silk covered with sand or plant debris

• larva of chalcid flies injurious to the straw of wheat and other grains

• Any of several breeds of domestic cat with relatively short hair, slender body and large head.

• any of numerous small slender long-tailed parrots

• The antler of a hart, once used as a source of ammonia.

• An aqueous solution of ammonia; smelling salts.

• To revive with hartshorn smelling salts.

• ice crystals forming a white deposit (especially on objects outside)

• a musical organization consisting of a group of instrumentalists including string players

• seating on the main floor in a theater

• subject to a mathematical transformation

• change or alter in form, appearance, or nature

• change in outward structure or looks

• change from one form or medium into another

• convert (one form of energy) to another

• change (a bacterial cell) into a genetically distinct cell by the introduction of DNA from another cell of the same or closely related species

• increase or decrease (an alternating current or voltage)