test-tube

adjective
\ˈtes(t)-ˌt(y)üb \

Definition of test-tube 

(Entry 1 of 2)

1 : in vitro test-tube experiments

2 : produced by in vitro fertilization test-tube babies

test tube

noun

Definition of test tube (Entry 2 of 2)

: a plain or lipped tube usually of thin glass closed at one end and used especially in chemistry and biology

Examples of test-tube in a Sentence

Recent Examples on the Web: Noun

Naturally, this idea of stuffing art into a test tube has its skeptics. Tom Mashberg, New York Times, "Do You Like ‘Dogs Playing Poker’? Science Would Like to Know Why," 8 July 2018 Or the Boston Cream Pie push pops served by Bristol-Myers Squibb in what resembled tiny test tubes. Jonathan Saltzman, BostonGlobe.com, "For smaller companies, a presence at BIO conference is a big deal," 7 June 2018 In human cells in a test tube and in mice bearing human senescent cells, the dasatinib-quercitin cocktail showed equally promising results, targeting senescent cells while leaving other cells intact. Melissa Healy, latimes.com, "This drug cocktail reduced signs of age-related diseases and extended life in mice and human cells," 10 July 2018 Please let this run be real for them, and for soccer itself, giving proof that romantic stories do happen outside of a test tube. Martin Rogers, USA TODAY, "Let's hope Russia doesn't end up ruining this amazing World Cup," 7 July 2018 There are a few possibilities for what this future technology will look like, from genetic modification of existing organs to brand new organs grown in test tubes and petri dishes. Avery Thompson, Popular Mechanics, "This Patch of 3D-Printed Flesh Is a Step Toward a Full 3D-Printed Heart," 3 July 2018 Lawrence Lacks, the executor of Lacks’s estate, said the family did not know until many years after his mother died that her cells were living in test tubes in science labs across the world. Deneen L. Brown, Washington Post, "Can the ‘immortal cells’ of Henrietta Lacks sue for their own rights?," 25 June 2018 The only studies done on the topic showing negative effect have used test tubes ofanimal models. Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "How Kelly Clarkson Lost Nearly 40 Pounds on the Plant Paradox Diet," 25 June 2018 Culture is associated with chemistry, and the chemistry of a company is not easily reduced to molecules in a test tube. Neil Senturia, sandiegouniontribune.com, "Creating a feeling of belonging is critical to your company's success," 25 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'test-tube.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of test-tube

Adjective

1866, in the meaning defined at sense 1

Noun

1846, in the meaning defined above

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Phrases Related to test-tube

test-tube baby

Statistics for test-tube

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Time Traveler for test-tube

The first known use of test-tube was in 1846

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More Definitions for test-tube

test tube

noun

English Language Learners Definition of test tube

: a glass container that is shaped like a tube which is closed at one end and that is used especially in science experiments

test tube

noun

Kids Definition of test tube

: a tube of thin glass closed at one end and used especially in chemistry and biology

test-tube

adjective

Medical Definition of test-tube 

(Entry 1 of 2)

1 : in vitro test-tube experiments

2 : produced by in vitro fertilization test-tube babies

test tube

noun

Medical Definition of test tube (Entry 2 of 2)

: a plain or lipped tube usually of thin glass closed at one end and used especially in chemistry and biology

Comments on test-tube

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