test-tube

adjective
\ ˈtes(t)-ˌt(y)üb How to pronounce test-tube (audio) \

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

Upcoming weekend workshops include block printing, sashiko embroidery, upcycled self-watering planter, test tube propagation station and DIY Bitters, in which folks 21 years old and up will create a custom blend. Dewayne Bevil, orlandosentinel.com, "Orlando Science Center: Stargazing, DIY mouse-ear headband sessions set for late-night event," 2 July 2019 Generally, each test recommends swabbing your dog’s cheek for between 20 seconds and a minute before replacing the collection in a test tube and mailing the sample to the lab. Lizz Schumer, Good Housekeeping, "I Tried the Most Popular Dog DNA Tests to Find the Best One," 22 May 2019 And isolating a protein in a test tube gives only partial answers, because within the organism, proteins nestle together, altering each other’s chemistry or holding each other in the right shape. Quanta Magazine, "How Heat Kills Cells," 9 May 2017 For a summer centerpiece, pile green apples on a breadboard; among the apples, insert test tubes containing white garden flowers; then garnish the arrangement with parsley. 6. Maggie O'neill, Good Housekeeping, "25 Practical Tips for Flower Arrangements From 1952," 7 May 2015 In a test tube, the resulting fusion antibodies could neutralize flu strains that neither of their single constituents could alone. Diana Gitig, Ars Technica, "Llama “nanobodies” might grant universal flu protection," 5 Nov. 2018 Other studies have been done in lab animals, or in vitro (meaning in a test tube, using animal brain tissue). Dan Nosowitz, Vox, "The super-popular cannabis compound, explained.," 1 Nov. 2018 As such, the Dugout Loop is likely a test tunnel (a test tube?) to see if The Boring Company can get this right. Megan Geuss, Ars Technica, "Elon Musk’s Boring Company proposes one-way, 3.6 mile tunnel to Dodger Stadium," 16 Aug. 2018 While the technique had only been demonstrated on molecules in test tubes at that point, the implications were breathtaking. Brad Plumer, Vox, "A simple guide to CRISPR, one of the biggest science stories of the decade," 23 July 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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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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