: 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
Emily Mullin, Wired News, 7 Apr. 2025
National Geographic harnesses some of that tendency in this kit that contains instructions and equipment for 15 different gross experiments with themes like boiling boogers, farting slime, bursting blood cells, eyeballs, and test-tube vomit.
—Cheryl Fenton, Parents, 5 Dec. 2024
Raven Brunner, People.com, 30 Mar. 2025
The test kit contains test tubes, a straw, a powder or liquid solution containing lactose, and a return box or envelope.78
Steps in home testing may include:87
Follow instructions for preparation, such as fasting and refraining from antibiotics, smoking, and vigorous exercise.
—Amber J. Tresca, Verywell Health, 14 Mar. 2025
See All Example Sentences for test-tube
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Adjective
After developing into an embryo in a test-tube, it’s implanted into the womb of a female surrogate animal.
—Emily Mullin, Wired News, 7 Apr. 2025
National Geographic harnesses some of that tendency in this kit that contains instructions and equipment for 15 different gross experiments with themes like boiling boogers, farting slime, bursting blood cells, eyeballs, and test-tube vomit.
—Cheryl Fenton, Parents, 5 Dec. 2024
Noun
The former reality star captioned the video post with three emojis: a microphone, a snake and a test tube filled with a green substance.
—Raven Brunner, People.com, 30 Mar. 2025
The test kit contains test tubes, a straw, a powder or liquid solution containing lactose, and a return box or envelope.78
Steps in home testing may include:87
Follow instructions for preparation, such as fasting and refraining from antibiotics, smoking, and vigorous exercise.
—Amber J. Tresca, Verywell Health, 14 Mar. 2025
See All Example Sentences for test-tube
Cite this Entry
“Test-tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/test-tube. Accessed 21 Apr. 2025.
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