tube › Synonyms

Synonyms for tube

Grouped by meaning, so you pick the word that fits what you mean. See the full definition of tube.

noun · conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases

noun · electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

vacuum tubethermionic vacuum tubethermionic tubeelectron tubethermionic valve

noun · a hollow cylindrical shape

noun · (anatomy) any hollow cylindrical body structure

tube-shaped structure

noun · an electric railway operating below the surface of the ground (usually in a city)

“in Paris the subway system is called the ‘metro’ and in London it is called the ‘tube’ or the ‘underground’”