A boiling tube, also known as a test tube, is commonly used in laboratory experiments to hold and heat small amounts of liquid samples. There are various synonyms for boiling tubes, including culture tubes, reaction tubes, and specimen tubes. Culture tubes are commonly used for the growth of microorganisms, while reaction tubes are used for chemical reactions. Specimen tubes, on the other hand, are used for collecting and storing biological samples. Other synonyms for boiling tubes include conical tubes, centrifuge tubes, and Eppendorf tubes, which are specialized types of tubes used for specific laboratory procedures. Regardless of the name, boiling tubes play an essential role in scientific research and experimentation.