Word

acid-base indicator, n.

an indicator that changes color on going from acidic to basic solutions
<noun.substance>

acid-base indicator

semantic pointers

hyponym

phenolphthalein congo red methyl orange litmus, litmus test bromophenol blue, bromphenol blue, tetrabromo-phenolsulfonephthalein bromothymol blue, bromthymol blue

hypernym