We found one dictionary that defines the word guaiacolphthalein:

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1. guaiacolphthalein: Wiktionary

Definitions from Wiktionary (guaiacolphthalein) ▸ noun:  A certain phthalein dye. ▸ Words similar to guaiacolphthalein ▸ Usage examples for guaiacolphthalein ▸ Idioms related to guaiacolphthalein ▸ Wikipedia articles (New!) ▸ Popular adjectives describing guaiacolphthalein ▸ Words that often appear near guaiacolphthalein ▸ Rhymes of guaiacolphthalein ▸ Invented words related to guaiacolphthalein