ACHROITE Meaning of ACHROITE in English /ak"roh uyt'/ , n.the colorless or white variety of tourmaline, often used as a gem. [ áchro ( os ) colorless ( a- A- 6 + -chroos colored) + -ITE 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012