tubes Definition

any of various usually cylindrical structures or devices: such as

a hollow elongated cylinder; especially : one to convey fluids

a soft tubular container whose contents (such as toothpaste) can be removed by squeezing

to fail or become ruined

to be wasted or lost

eustachian tube

television —usually used with the

tube top

a primary bronchus or any of its branches

a vacuum tube in which a beam of electrons is projected on a phosphor-coated screen to produce a luminous spot at a point on the screen determined by the effect on the electron beam of a variable magnetic field within the tube

a large tube that shows a picture on a screen (such as a television or computer screen)

an electron tube which contains gas or vapor at low pressure and through which conduction takes place when a high voltage is applied

an electronic device in which conduction by electrons takes place through a vacuum or a gaseous medium within a sealed glass or metal container and which has various uses based on the controlled flow of electrons

a bony and cartilaginous tube connecting the middle ear with the nasopharynx and equalizing air pressure on both sides of the tympanic membrane —called also auditory tube

either of the pair of tubes that carry the egg from the ovary to the uterus