• X-ray focus tube
    X-ray focus tube
  • WordNet 3.6
    • v tube place or enclose in a tube
    • v tube ride or float on an inflated tube "We tubed down the river on a hot summer day"
    • v tube convey in a tube "inside Paris, they used to tube mail"
    • v tube provide with a tube or insert a tube into
    • n tube an electric railway operating below the surface of the ground (usually in a city) "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
    • n tube conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
    • n tube electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
    • n tube (anatomy) any hollow cylindrical body structure
    • n tube a hollow cylindrical shape
    • ***

Additional illustrations & photos:

Larynx, Trachea, and Bronchial Tubes Larynx, Trachea, and Bronchial Tubes

Webster's Revised Unabridged Dictionary
  • Interesting fact: Due to the shortages of lead and metals during World War II, toothpaste was packaged in plastic tubes and have been ever since
    • Tube A hollow cylinder, of any material, used for the conveyance of fluids, and for various other purposes; a pipe.
    • Tube (Zoöl) A more or less cylindrical, and often spiral, case secreted or constructed by many annelids, crustaceans, insects, and other animals, for protection or concealment. See Illust. of Tubeworm.
    • Tube (Gun) A priming tube, or friction primer. See under Priming, and Friction.
    • Tube (Steam Boilers) A small pipe forming part of the boiler, containing water and surrounded by flame or hot gases, or else surrounded by water and forming a flue for the gases to pass through.
    • Tube A telescope. "Glazed optic tube ."
    • Tube (Elec. Railways) A tunnel for a tube railway; also Colloq, a tube railway; a subway.
    • Tube A vessel in animal bodies or plants, which conveys a fluid or other substance.
    • Tube (Zoöl) One of the siphons of a bivalve mollusk.
    • Tube (Bot) The narrow, hollow part of a gamopetalous corolla.
    • v. t Tube To furnish with a tube; as, to tube a well.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: The microwave oven was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket.
    • n tube A city subway in the form of a tunnel.
    • tube A pipe or hollow cylinder, especially when of small size and used as a conduit for liquids, or for containing liquids, as in some forms of scientific apparatus. Mechanically there is no distinction between a pipe and a tube; but in use the two words are often somewhat arbitrarily distinguished. Thus, when the form of the thing is chiefly considered, tube is regularly used; as, a steam-boiler having the shape of a large tube—not pipe; so, also, with reference to certain mechanical uses one word or the other is exclusively used: as, a gas-pipe, a drain-pipe, a test-tube. The words are also distinguished in use, but less clearly, according to the material employed: as, an iron pipe, a rubber tube, a brass tube, etc.
    • tube Specifically, the main body of a musical instrument of either the wood wind or the brass wind group. The bore of such instruments is usually conical, but sometimes cylindrical.
    • tube In anatomy and zoology, a hollow tubular organ; a pipe, canal, or duct conveying fluid or gas; especially, a pipe which seems to be empty—that is, conveys air: as, the bronchial tubes; the Eustachian tube. An artery or a vein is a tube, but nearly if not all the structures which convey special fluids receive distinctive names, see tuba, tubule.
    • tube In botany, any hollow elongated body or part of an organ: applied especially to a gamopet-alous corolla or gamosepalous calyx, also to a united circle of stamens (see cut 9 under stamen).
    • tube A priming-tube.
    • tube A telescope, or that part of it into which the lenses are fitted.
    • tube The barrel of a chain-pump.
    • tube A small receptacle of drawn lead, of approximately tubular form, closed at the bottom by bending it over twice or three times on itself, and having a screw-cap at the top, used to hold pigments or similar matter in a semifluid condition.
    • tube To furnish with a tube or tubes.
    • tube To receive or inclose in a tube.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: The Mount Horeb Mustard Museum which is located in Wisconsin has the biggest collection of prepared mustards. They have approximately 4,000 different jars and tubes from all over the world
    • n Tube tūb a pipe: a long hollow cylinder for the conveyance of fluids, &c.: a canal: the body of a musical instrument: a telescope: a cylindrical receptacle for holding semi-fluid substances, as pigments
    • v.t Tube to furnish with, enclose in, a tube
    • ***


  • Earl Wilson
    Earl Wilson
    “Money in the bank is like toothpaste in the tube. Easy to take out, hard to put back.”
  • Shirley Williams
    Shirley Williams
    “No test tube can breed love and affection. No frozen packet of semen ever read a story to a sleepy child.”
  • Harold Robbins Haldeman
    Harold Robbins Haldeman
    “Once the toothpaste is out of the tube, it's hard to get it back in.”
  • Norman Mailer
    “The difference between writing a book and being on television is the difference between conceiving a child and having a baby made in a test tube.”
  • Source Unknown
    Source Unknown
    “Wise are they who have learned these truths: Trouble is temporary. Time is a tonic. Tribulation is a test tube.”


Down the tubes - If something has gone down the tubes, it has failed or been ruined.


Webster's Revised Unabridged Dictionary
L. tubus,; akin to tuba, a trumpet: cf F. tube,


In literature:

At f the arm is brought across the tube and permanently fixed in the smaller tube.
"Practical Taxidermy" by Montagu Browne
The =tubes= are yellow, adnate, the tube surface plane or convex.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc." by George Francis Atkinson
The generators for heat, light and controls, were turned by discharge through the tubes.
"Wanted--7 Fearless Engineers!" by Warner Van Lorne
The first-named have one or two advantages over the nickel tube.
"Gas and Oil Engines, Simply Explained" by Walter C. Runciman
Flattened lead tube wound about central brass tube contains the resistance wire.
"Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man" by Francis Gano Benedict
As the potato comes from the tube, guide it in a circle, winding it around until it comes to a point.
"The Century Cook Book" by Mary Ronald
With the needle or pin carefully uncoil the sucking tube which you may find under the head between two shields.
"A Guide for the Study of Animals" by Worrallo Whitney
As another example we may consider a circular tube of external radius r0 and internal radius r1.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2" by Various
The only article of the above materials in regard to which the reader will have any difficulty, is the tube.
"The Boys' And Girls' Library" by Various
The Disan jerked a belled tube from his waistband and raised it to his mouth.
"Sense of Obligation" by Henry Maxwell Dempsey (AKA Harry Harrison)
This tube was a little longer than the speculum that before had been in use.
"Makers of Modern Medicine" by James J. Walsh
Later, sufficient of this substance was removed from some very thick air-dried sheets, or thin slabs, to fill a small test-tube.
"The Preparation of Plantation Rubber" by Sidney Morgan
Barlow's Water-Tube Boiler, 1793 256 80.
"A History of the Growth of the Steam-Engine" by Robert H. Thurston
He peeled it, and then forced out the pith, and thus made a tube.
"Bevis" by Richard Jefferies
He introduced into this tube a certain quantity of water so as to half fill it.
"In Search of a Son" by William Shepard Walsh
We found that the crowd was approaching by a wire leading into the tube.
"Autobiography of an Electron" by Charles R. (Charles Robert) Gibson
This tube is enveloped by another fixed to the top of the boiler but not opening into it, and so that the two tubes are about an inch apart.
"A Treatise on Meteorological Instruments" by Henry Negretti
Then he took the paper from the top of the tube, and still the water remained in the tube.
"Water Wizardry" by Arthur Ainslie
It consists of an ordinary pistol fitted with a conical tin tube eight inches long.
"Magic" by Ellis Stanyon
Now, Mrs. B., will you let me fill the tube, by pouring water into the goblet?
"Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained" by Jane Haldimand Marcet and Thomas P. Jones

In poetry:

He chokes the infant throat with slime,
He sets the ferment free;
He builds the tiny tube of lime
That blocks the artery.
"Religio Medici" by Arthur Conan Doyle
Sull'aureo tripode--parea dormire,
Poiche` le belliche--tube eran mute,
Ne` piu` all'Oracolo--chiedevan l'ire
Senno e virtude.
"Il Secolo Di Pericle" by Ferdinando Fontana
"Or float across the tube that HERSCHEL sways,
Like pale-rose chaplets, or like sapphire mist;
Or hang or droop along the heavenly ways,
Like scarves of amethyst.
"Honours -- Part I" by Jean Ingelow
At length on his stepping backward a pace
The light of the tube lamp fell on his face,
It was white as if with unspoken fear,
As he turn'd and said, "Bob, come over here."
"Jim Dalley" by Alexander Anderson
The souls that voyaged the azure depths before thee
Watch with thy tireless vigils, all unseen,--
Tycho and Kepler bend benignant o'er thee,
And with his toy-like tube the Florentine,--
"A Welcome To Dr. Benjamin Apthorp Gould" by Oliver Wendell Holmes
Mistaken Marskman! I defy
Your impotent artillery;
Your level'd tube I value not,
Nor tremble at the threaten'd shot;
When the fair Lady who sits by,
Shoots darts more fatal from her eye.
"To A Gentleman: Sitting Next to a Young Lady presents a Pop-Gun to the Author" by Samuel Bowden

In news:

The Thompson brothers taking up temporary residence in the tubes of the Outer Banks.
Today, protests have taken to You Tube.
Our colleges and universities are headed down the tubes.
In a few years, when people ask, "What's on the tube tonight".
A single ubiquitin molecule, with thicker tubes representing the more flexible parts of the molecule Photo Researchers, Inc, Phantatomix.
Bake in a tube pan at 350 degrees F.
When Nathan Engels hits the stores, it's shopping on steroids: 30 packs of baby diapers, 50 bottles of body wash, 20 tubes of toothpaste.
Listen to Slate 's show about young women getting their tubes tied, last week's date-rape episode of Louie, and Seventeen magazine's new photo touch-up policy.
Search crews, aided for a second day by a Northstar police helicopter, are back on the Delaware River today, July 19, trying to find the 16-year-old Willingboro boy who disappeared while tubing yesterday.
Basically, the system consists of a billet-aluminum throttle tube and three "cam" ends that interchange by popping on and off easily.
I am considering using a stainless-steel shell-and-tube heat exchanger (water - water) in the place of a copper one.
Using FEM to compare tube forming processes.
Sheila Kennedy, contributing editor, says use these methods to confirm the integrity of tubes and tube sheets.
Michigan Seamless Tube, a manufacturer of carbon and alloy seamless cold-drawn pipe and tube, has begun construction on a new 9,600-square-foot pickling house.
Has acquired Fine Tubes Ltd in Plymouth, UK, and Superior Tube Co.

In science:

A general question concerning the flux tube approach is how far we can consider the flux tube to be thin in the thermal sense.
Magnetic Fields in Massive Stars. II. The Buoyant Rise of Magnetic Flux Tubes Through the Radiative Interior
This expression is valid for each tube - on - tube collision.
Simple models of the contribution of intermediate state gluons to J\psi suppression at the CERN SPS
Each packet corresponds itself to a larger tube of width M j−k , hence contains M j/2−k anisotropic tubes of width M j/2 .
Random Matrices and the Anderson Model
The former is a rotation α around the tube axis with a simultaneous translation h along the tube axis, the latter a rotation of 2π N around the tube axis. A generalized motif cell (m, l) can be generated from the (0, 0) cell by successive operations of S (α, h) and CN for m and l times respectively.
A lattice dynamical treatment for the total potential energy of single-walled carbon nanotubes and its applications: relaxed equilibrium structure, elastic properties, and vibrational modes of ultra-narrow tubes
Furthermore, we display the radius dependence of the Young’s modulus in Fig. 6 for two species SWCNT’s: armchair tubes (n, n), and zigzag tubes (n, 0).
A lattice dynamical treatment for the total potential energy of single-walled carbon nanotubes and its applications: relaxed equilibrium structure, elastic properties, and vibrational modes of ultra-narrow tubes
This expansion is similar to the transition from tubes to expanded tubes in the commutative case - .
Generalized Haag's Theorem in SO(1,1) and SO(1,3) Invariant Quantum Field Theory
This expansion is similar to the transition from tubes to expanded tubes in the commutative case.
Classical Theorems in Noncommutative Quantum Field Theory
Thus, for a graph G with n nodes, a tubing of G can at most contain n − 1 tubes.
A Realization of Graph-Associahedra
For each such tubing U in MG , define a map fU from the nodes of G to the integers as follows: If a node v of G is a tube of U , then fU (v) = 0.
A Realization of Graph-Associahedra
One can verify that the edges correspond to all possible 2-tubings and the vertices to 3-tubings.
A Realization of Graph-Associahedra
Let Gu be the set of all 1-tubings of G, where Gi u be the set of 1-tubings containing i nodes.
A Realization of Graph-Associahedra
Given a virtual graph diagram K , we can define the tube T (K ) of it exactly in the same way as the tube of a virtual link or arc is defined.
Invariants of Welded Virtual Knots Via Crossed Module Invariants of Knotted Surfaces
The beam waist was estimated to ≈ 100µm, i.e. roughly eight times smaller than the tube diameter, thus avoiding any guiding by the tube.
Macroscopic effects in attosecond pulse generation
As shown below in Fig 7, we create a tube around each string, such that within this tube, all the tra jectories follow the middle strand, while outside it, the dynamics are all zero, which means both ˙x and ˙y are 0.
Dynamical Systems on Three Manifolds Part I: Knots, Links and Chaos
In the present case it is not easy to directly measure the length of such magnetic tubes, although Okamoto et al. (2007) estimate that the wavelength of the oscillations is at least 250,000 km and so the minimum length of the magnetic tubes is 125,000 km.
Prominence seismology using small amplitude oscillations