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Test tube

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test tube

–noun
a hollow cylinder of thin glass with one end closed, used in chemical and biological experimentation and analysis.

Origin:
1840–50

test-tube

[test-toob, -tyoob]
–adjective
produced in or as if in a test tube; synthetic or experimental.

Origin:
1885–90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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test tube  
n.  A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: test–tube
Function: adjective
: produced by fertilization in laboratory apparatus and implantation in the uterus, by fertilization and growth inlaboratory apparatus, or sometimes by artificial insemination <test–tube babies>

Main Entry: test tube
Function: noun
: a plain or lipped tube usually of thin glass closed at one end and used especially in chemistry and biology
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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

test-tube adj.

  1. Produced or cultivated in a test tube.

  2. Conceived by or developed from fertilization in laboratory apparatus or by artificial insemination.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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