from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Relating to or shaped like a tube.
  • adjective Consisting of tubes or a tube.

from The Century Dictionary.

  • Having the form of a tube or pipe, without reference to size; tubuliform; tubiform; tubar; fistulous.
  • In botany, tube-like; tube-shaped; having a tube; tubulous: as, a tubular corolla or calyx.
  • As applied to respiratory sounds, noting a sound like that produced by a current of air through a tube.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Having the form of a tube, or pipe; consisting of a pipe; fistular
  • adjective See under Boiler.
  • adjective (Med.) a variety of respiratory sound, heard on auscultation over the lungs in certain cases of disease, resembling that produced by the air passing through the trachea.
  • adjective a bridge in the form of a hollow trunk or tube, made of iron plates riveted together, as the Victoria bridge over the St. Lawrence, at Montreal, Canada, and the Britannia bridge over the Menai Straits.
  • adjective a plate girder having two or more vertical webs with a space between them.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Shaped like a tube.
  • adjective Of or pertaining to a tube.
  • adjective Consisting of tubes.
  • adjective slang, dated Cool, awesome.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective constituting a tube; having hollow tubes (as for the passage of fluids)


Sorry, no etymologies found.


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  • In the sense of awesome, said to date from the advent of vacuum tubes.

    July 29, 2015