Library / English Dictionary

TEST TUBE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Glass tube closed at one end

Classified under:

Nouns denoting man-made objects

Hypernyms ("test tube" is a kind of...):

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

Credits

 Context examples: 

A laboratory test or analysis of the biological activity of a substance performed by studying its effect in an experimental situation outside the organism, e.g. in the test tube rather than in living systems.

(Bioassay, In Vitro, NCI Thesaurus)

The act of measuring or estimating a quantity resulting from a laboratory test or analysis of the biological activity of a substance performed by studying its effect on an organism or in a test tube under controlled conditions.

(Bioassay Measurement, NCI Thesaurus)