bromphenol blue(n = noun.substance) bromophenol blue, tetrabromo-phenolsulfonephthalein - a dye used as an acid-base indicator;
is a kind of acid-base indicator, dye, dyestuff

bavarian blue, big blue, black and blue, blue, blue african lily, blue air, blue angel, blue ash, blue baby, blue blood, blue bonnet, blue book, blue bugle, blue bull, blue cardinal flower, blue cat, blue catfish, blue channel cat, blue channel catfish, blue cheese, blue cheese dressing, blue chip, blue cohosh, blue collar worker, blue columbine, blue copperas, blue crab, blue curls, blue daisy, blue darter, blue devil, blue devils, blue elder, blue elderberry, blue false indigo, blue fig, blue flag, blue fleabane, blue fox, blue funk, blue goose, blue grama, blue grass, blue green, blue gum, blue hen state, blue in the face, blue jack, blue jasmine, blue jay, blue jean, blue jeans, blue jessamine, blue jets, blue joke, blue language, blue law, blue lotus, blue mahoe, blue marguerite, blue marlin, blue mockingbird, blue mold fungus, blue moon, blue mountain tea, blue movie, blue murder, blue nile, blue note, blue orchid, blue pea, blue peafowl, blue pencil, blue peter, blue pickerel, blue pike, blue pikeperch, blue pimpernel, blue point, blue point siamese, blue pointed, blue poppy, blue racer, blue ribbon, blue ribbon commission, blue ribbon committee, blue ribbon jury, blue ridge, blue ridge mountains, blue runner, blue sage, blue shark, blue skullcap, blue sky, blue sky law, blue star, blue stem, blue stone, blue story, blue streak, blue succory, blue thistle, blue tit, blue toadflax, blue tulip, blue velvet, blue vitriol, blue wall, blue wall of silence, blue walleye, blue whale, bright blue, bromophenol blue, bromothymol blue, bromthymol blue, cerulean blue, cobalt blue, colorado blue spruce, danish blue, dark blue, french blue, french ultramarine blue, great blue heron, great blue shark, greenish blue, iron blue, kentucky blue, kentucy blue grass, kerry blue terrier, like blue murder, little blue heron, methylene blue, mountain blue berry, navy blue, out of the blue, pale blue, peacock blue, powder blue, prussian blue, purplish blue, reddish blue, royal blue, s'8avres blue, sky blue, southern blue flag, steel blue, true blue, turnbull's blue, ultramarine blue, wild blue yonder, wooly blue curls