test tube
noun
a hollow cylinder of thin glass with one end closed, used in chemical and biological experimentation and analysis.
test tubes
-
pluralof test tube.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These preforms, which look like plastic test tubes, are sold to brands and bottle manufacturers to be shaped into plastic bottles of the desired shape and size.
From BBC ● Apr. 2, 2026
That case involved two Belgian teenagers, who were arrested in possession of nearly 5,000 ants, mostly stored in test tubes.
From Barron's ● Mar. 17, 2026
You must sort these marbles by color within the test tubes.
From Slate ● Dec. 28, 2024
Research in biomedical laboratories has been changing significantly in recent years, to the point that test tubes have given way to computers on many occasions.
From Science Daily ● Nov. 26, 2024
It involved a large wooden roller drum, a cylinder with holes for special test tubes called roller tubes.
From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot
