test-tube

¹ American  

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

adjective

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

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test tube ² American  

noun

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

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test tube British  

noun

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

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test tube Scientific  

/ 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.

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Etymology

Origin of test-tube¹

First recorded in 1885–90

Origin of test tube¹

First recorded in 1840–50

Example Sentences

Mr. Stanley pulls out a rack of test tubes.

From Literature

The RNA used in experiments are usually produced in test tubes, a costly process often patented by US companies.

From Barron's

It reveals the structural traits that work under real environmental conditions rather than just in test tubes.

From Science Daily

But the majority of studies looking at the effects of herbal supplements like these on parasites have been conducted in test tubes or culture dishes — not in humans.

From Salon

Lab-grown food involves growing food ingredients, such as protein, fat and carbohydrates in test tubes and vats and then processing them to make them look and taste like normal food.

From BBC