ACID-BASE INDICATOR

Pronunciation (US):

 Dictionary entry overview: What does acid-base indicator mean? 

• ACID-BASE INDICATOR (noun)
  The noun ACID-BASE INDICATOR has 1 sense:

1. an indicator that changes color on going from acidic to basic solutions

  Familiarity information: ACID-BASE INDICATOR used as a noun is very rare.

 Dictionary entry details 

• ACID-BASE INDICATOR (noun)

Meaning:

An indicator that changes color on going from acidic to basic solutions

Classified under:

Nouns denoting substances

Hypernyms ("acid-base indicator" is a kind of...):

indicator ((chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction)

Hyponyms (each of the following is a kind of "acid-base indicator"):

phenolphthalein (a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8)

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

methyl orange (an azo dye used as an acid-base indicator; used for titrations involving weak bases)

litmus; litmus test (a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator)

bromophenol blue; bromphenol blue; tetrabromo-phenolsulfonephthalein; bromothymol blue; bromthymol blue (a dye used as an acid-base indicator)