tube

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tube,

in electronics: see electron tubeelectron tube,
device consisting of a sealed enclosure in which electrons flow between electrodes separated either by a vacuum (in a vacuum tube) or by an ionized gas at low pressure (in a gas tube).
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.

Tube

A long, hollow cylinder, or other hollow shape; typically a flexible or thin-walled metal cylinder, as opposed to a pipe.

tube

[′tüb]
(biology)
A narrow channel within the body of an animal or plant.
(electronics)
(engineering)
A long cylindrical body with a hollow center used especially to convey fluid.
(geology)
A passage in a cave having smooth sides and an elliptical to nearly circular cross section.
(ordnance)
The main part of a gun, the cylindrical piece of metal surrounding the bore; tube is frequently used in referring to artillery weapons, and barrel is more frequently used in referring to small arms.

tube

1. A thin-walled pipe.
2.See lamp.

tube

1. Anatomy
b. any hollow cylindrical structure
2. Botany
a. the lower part of a gamopetalous corolla or gamosepalous calyx, below the lobes
b. any other hollow structure in a plant
3. Brit the tube
a. an underground railway system
b. the tunnels through which the railway runs
c. the train itself
d. ™ the London underground railway system
4. Electronics
a. another name for valve
5. Surfing the cylindrical passage formed when a wave breaks and the crest tips forward

tube

(hardware)
A CRT terminal. Never used in the mainstream sense of TV; real hackers don't watch TV, except for Loony Toons, Rocky & Bullwinkle, Trek Classic, the Simpsons, and the occasional cheesy old swashbuckler movie.

tube

(electronics)

tube

(jargon)
(IBM) To send a copy of something to someone else's terminal. "Tube me that note."
References in periodicals archive ?
After all, if the banks are going to fail, the credit card companies are going down the tubes and the IRS won't be able to collect taxes, then it's definitely time to let the good times roll.
The massive gamble on promotion this season by the club's Thai owners is on the verge of going down the tubes, which puts the Foxes at risk next term.
Speaking yesterday, Curley, who intends to continue living in Newmarket, said: "Racing is just going down the tubes every day in terms of prize-money, and I have just come to the stage where I have had enough of it.
I hope someone down Cardiff Bay will get off their backsides and stop yet another manufacturing plant going down the tubes.
Remember, two-and-a-half years ago I was desperately trying to find a buyer for Hearts because Chris Robinson and the other directors were hell bent on selling Tynecastle to Cala Homes and the club was going down the tubes.
They spent so much time and effort trying to be great parents, and they saw their son going down the tubes.
In fact it could have helped stop the Yard going down the tubes.
A small family-run business is going down the tubes, thousands of pounds of investment seem to have been wasted and father and son blame each other.
As Jim Wright was going down the tubes, for example, his lawyer actually lobbied a group of blue-chip lobbyists in a futile bid to keep the Speaker's job.
There was no sign of life yesterday at the house which Mr Foy shares with his wife and daughter as news broke that he will trouser the enormous bonus for 2008 - when the bank was going down the tubes.
Golf punters lost money when internet betting site golfinggods went into administration last year and O'Keeffe said yesterday: "When golfinggods were going down the tubes, we removed them from the IBAS register.
But while things were looking good on the scales, her 25-year marriage was going down the tubes.