A device that produces X-rays by directing energetic electrons into a metal target.

a vacuum tube in which electrons from a heated cathode are focused and deflected onto a phosphorescent screen; used in television sets etc

(electronics) An electron tube in which high-energy microwaves are produced by transferring energy from electrons

(medicine) A potentially fatal condition caused by a feeding regimen given through a tube that provides too little water and too much protein in the diet.

past participle of go down the tube

plural of test tube baby

Riftia pachyptila, a large marine worm found around the floor of the Pacific Ocean near geothermal vents.

(botany) A type of sclerenchyma cell located in the phloem that is involved in the movement of carbohydrates.

(medicine, usually capitalized) Alternative form of Miller-Abbot tube

(electronics) A vacuum tube that displays still or moving images (such as for a television), by controlling the direction of a cathode ray emitted towards the front of the tube. The front is coated by a layer of fluorescent material, so that it emits light when struck by the beam.