test tube(redirected from Culture tube)
Also found in: Thesaurus, Medical, Encyclopedia.
A clear, cylindrical glass tube usually open at one end and rounded at the other, used in laboratory experimentation.
1. (Chemistry) a cylindrical round-bottomed glass tube open at one end: used in scientific experiments
2. (Chemistry) (modifier) made synthetically in, or as if in, a test tube: a test-tube product.
a hollow cylinder of thin glass with one end closed, used in laboratory experimentation and analysis.
produced in or as if in a test tube; synthetic or experimental.
A cylindrical tube of clear glass, usually open at one end and rounded at the other, used as a container for small amounts of a substance in laboratory tests and experiments.