test tube

• Tube mince en verre ou en plastique, généralement de forme cylindrique, ouvert à une extrémité, utilisé dans les laboratoires scientifiques pour contenir, mélanger ou chauffer de petites quantités de substances lors d'expériences.

A thin glass or plastic container, typically cylindrical and open at one end, used in scientific laboratories for holding, mixing, or heating small quantities of substances during experiments.

1. Laboratory containerB1formal

   A thin glass or plastic tube, closed at one end, used in scientific experiments to hold small amounts of substances.

   Tube à essai

   • The chemist carefully poured the liquid into a test tube.
   • She labeled each test tube with the sample name.
   • The test tube was heated over a Bunsen burner.

2. B2informal

   Used in the phrase 'test-tube baby' to refer to a baby conceived through in vitro fertilization (IVF).

   tube à essai (fécondation in vitro)

   • The first test-tube baby was born in 1978.
   • Many couples turn to test-tube technology to conceive.
   • The clinic specializes in test-tube fertilization procedures.