: 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
Frederick N. Rasmussen, Baltimore Sun, 11 Feb. 2024
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, 22 Nov. 2023
On this day 45 years ago, Louise Brown — the world’s first test-tube baby — was born.
—Elvia Limón, Los Angeles Times, 25 July 2023
Katie Camero, USA TODAY, 21 Mar. 2024
Aravind’s colleague Aaron Whiteley and his lab at University of Colorado and his lab equipped E. coli with NACHT domains and grew them in test tubes.
—Quanta Magazine, 6 Mar. 2024
To overcome this issue, the researchers used a number of cutting-edge laboratory techniques to recreate and isolate double-strand DNA breaks in a test tube, entirely independent of cells.
—William A. Haseltine, Forbes, 25 Feb. 2024
Some believe embryos – even if frozen, in a test tube, and nonviable unless implanted – should be protected as human.
—Ali Martin, The Christian Science Monitor, 18 Mar. 2024
Facebook Show more sharing options SAN DIEGO — Periodic downpours Saturday were no match for ice cold volcanic eruptions, whimsical robots, and colorful test tube experiments, as families flocked to Snapdragon Stadium for the annual San Diego Festival of Science and Engineering’s Expo Day.
—Lori Weisberg, San Diego Union-Tribune, 3 Mar. 2024
If not serving immediately, gently shake each test tube before serving as the ingredients will settle slightly.
—Lauren Hubbard, Town & Country, 2 Aug. 2023
The ground is littered with bottles of water, soft drinks and test tubes containing leaf and soil samples used in DNA testing to identify the dead.
—Roger Cohen Avishag Shaar-Yashuv, New York Times, 15 Oct. 2023
The locks were decontaminated one hair at a time using tweezers and a light bleach concentration; they were then rinsed in water and put into a test tube.
—Jennifer Ouellette, Ars Technica, 22 Mar. 2023
Adjective
In a departure from her usual beat, Ms. Hosler wrote a moving first person account in 1985 for the old Sunday Sun Magazine about her experiences as one of the first to go through Hopkins’s test-tube baby program which in her case was not successful.
—Frederick N. Rasmussen, Baltimore Sun, 11 Feb. 2024
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, 22 Nov. 2023
On this day 45 years ago, Louise Brown — the world’s first test-tube baby — was born.
—Elvia Limón, Los Angeles Times, 25 July 2023
Noun
Some weight loss drugs can make your birth control pill less effective
Studies done in test tubes have found that tirzepatide — the active ingredient in Mounjaro and Zepbound — reduces the efficacy of oral contraception, aka the birth control pill, according to the drugs’ labels.
—Katie Camero, USA TODAY, 21 Mar. 2024
Aravind’s colleague Aaron Whiteley and his lab at University of Colorado and his lab equipped E. coli with NACHT domains and grew them in test tubes.
—Quanta Magazine, 6 Mar. 2024
To overcome this issue, the researchers used a number of cutting-edge laboratory techniques to recreate and isolate double-strand DNA breaks in a test tube, entirely independent of cells.
—William A. Haseltine, Forbes, 25 Feb. 2024
Some believe embryos – even if frozen, in a test tube, and nonviable unless implanted – should be protected as human.
—Ali Martin, The Christian Science Monitor, 18 Mar. 2024
Facebook Show more sharing options SAN DIEGO — Periodic downpours Saturday were no match for ice cold volcanic eruptions, whimsical robots, and colorful test tube experiments, as families flocked to Snapdragon Stadium for the annual San Diego Festival of Science and Engineering’s Expo Day.
—Lori Weisberg, San Diego Union-Tribune, 3 Mar. 2024
If not serving immediately, gently shake each test tube before serving as the ingredients will settle slightly.
—Lauren Hubbard, Town & Country, 2 Aug. 2023
The ground is littered with bottles of water, soft drinks and test tubes containing leaf and soil samples used in DNA testing to identify the dead.
—Roger Cohen Avishag Shaar-Yashuv, New York Times, 15 Oct. 2023
The locks were decontaminated one hair at a time using tweezers and a light bleach concentration; they were then rinsed in water and put into a test tube.
—Jennifer Ouellette, Ars Technica, 22 Mar. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'test-tube.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Test-tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/test-tube. Accessed 16 Apr. 2024.
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Kids Definition
test tube
noun
: a tube of thin glass closed at one end and used especially in chemistry and biology
Medical Definition
test-tube
1 of 2 adjective1
: in vitro
test-tube experiments
2
: produced by in vitro fertilization
test-tube babies
test tube
2 of 2 noun
: a plain or lipped tube usually of thin glass closed at one end and used especially in chemistry and biology
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