test tube
nounUK /ˈtest tjuːb/
US /ˈtest tuːb/
A test tube is a small glass tube with a round bottom that scientists use to hold liquids.
The scientist poured the blue liquid into a test tube.
RELATED WORDS
OTHER MEANINGS
2. A small container used in medical labs to collect blood or other samples.
The nurse filled a test tube with blood for testing.
3. A symbol of scientific research and experimentation.
The cartoon scientist held a bubbling test tube.
4. A narrow glass vessel used in school science classes.
Each student got a test tube to mix the safe chemicals.