produced in or as if in a test tube; synthetic or experimental.
Origin of test-tube
First recorded in 1885–90
a hollow cylinder of thin glass with one end closed, used in chemical and biological experimentation and analysis.
Origin of test tube
First recorded in 1840–50
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for test-tube
Contemporary Examples of test-tube
Historical Examples of test-tube
From early dawn to midnight I bent over the test-tube and the furnace.
Pour off the water, add more water, and place in a test-tube.
Place a few drops in a test-tube, and heat cautiously over a spirit-lamp, and when it boils remove, and inhale by the nose.
But it will be the test-tube and not the cogwheel that will make the money.
I top the test-tube with another tube, the width of the neck of a claret bottle.
British Dictionary definitions for test-tube
a cylindrical round-bottomed glass tube open at one end: used in scientific experiments
(modifier) made synthetically in, or as if in, a test tubea test-tube product
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for test-tube
1809, from test (n.) + tube (n.). So called because it originally was used to test the properties of liquids. Test-tube baby is recorded from 1935.
Online Etymology Dictionary, © 2010 Douglas Harper
Produced or cultivated in a test tube.
Conceived by or developed from fertilization in laboratory apparatus or by artificial insemination.
A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
A cylindrical tube of clear glass, usually open at one end and rounded at the other, used as a container for small amounts of a substance in laboratory tests and experiments.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.