Definitions

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

  • noun A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.

from The Century Dictionary.

  • noun A cylinder of thin glass closed at one end, used in testing liquids.
  • noun A chlorometer.
  • The use of the test-tube in chemistry.

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

  • noun chemistry a glass tube, rounded at one end and open at the other; used for small-scale laboratory tests
  • adjective produced in a test tube
  • adjective conceived or developed in vitro by artificial insemination

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

  • noun glass tube closed at one end

Etymologies

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Examples

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