test tube

  1. 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

Words Nearby test tube

Other definitions for test-tube (2 of 2)

[ test-toob, -tyoob ]

  1. produced in or as if in a test tube; synthetic or experimental.

Origin of test-tube

First recorded in 1885–90

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use test tube in a sentence

British Dictionary definitions for test tube

test tube

  1. a cylindrical round-bottomed glass tube open at one end: used in scientific experiments

  2. (modifier) made synthetically in, or as if in, a test tube: a 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

Scientific definitions for test tube

test tube

[ tĕst ]

  1. 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.