| ̷ ̷ ̷ ̷ at bromo- +...- noun
also brom·phenol blue (ˈ)brōm+...-
Etymology: International Scientific Vocabulary brom- + phenol
: a dye C 19 H 10 Br 4 O 5 S obtained as pinkish crystals and used as an acid-base indicator; tetrabromo-phenolsulfonephthalein