1. a mineral, lithium aluminum silicate, Li(AlSi4O10), occurring in colorless or white foliated masses: an important source of lithium.

Origin of petalite

From the German word Petalit, dating back to 1800–10. See petal, -ite1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for petalite

Historical Examples of petalite