CONGO RED

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)

Classified under:

Nouns denoting substances

Hypernyms ("congo red" is a kind of...):

acid-base indicator (an indicator that changes color on going from acidic to basic solutions)

azo dye (any dye containing one or more azo groups)

Domain category:

solution (a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution)

Credits