Definition of test-tube
- test-tube experiments
- test-tube babies
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'test tube.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a glass container that is shaped like a tube which is closed at one end and that is used especially in science experiments
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an inference not connected logically
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