Dictionary.com

test tube

Save This Word!

noun

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

QUIZZES

THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?

Did you ever collect all those state quarters? Put them to good use on this quiz about curious state monikers and the facts around them.
Question 1 of 8
Mississippi’s nickname comes from the magnificent trees that grow there. What is it?

Origin of test tube

First recorded in 1840–50

Definition for test tube (2 of 2)

test-tube
[ test-toob, -tyoob ]
/ ˈtɛstˌtub, -ˌtyub /

adjective

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. 2021

Example sentences from the Web for test tube

British Dictionary definitions for test tube

test tube

noun

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

Medical definitions for test tube (1 of 2)

test tube

n.

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

Medical definitions for test tube (2 of 2)

test-tube

adj.

Produced or cultivated in a test tube.
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.

Scientific definitions for test tube

test tube
[ tĕst ]

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.
Book Your Online Tutor Now