An improvement on the Crookes tube in which the electrons are produced by thermionic effect from a tungsten filament heated by an electric current.

plural of tubal ligation

plural of tubax

A kind of modified saxophone, made compact by having more folds in the tubing.

microcentrifuge tube

A tube that is entirely below the water level of a boiler during operation.

A single-ended thimble tube in a boiler, with an internal tube to encourage circulation.

A tapered thermic syphon water-tube inserted in the furnace of a Lancashire boiler.

Synonym of funnel cloud

plural of cumulonimbus tuba