Prehnitic

Prehn`it´ic


a.1.(Chem.) Pertaining to, or designating, a tetrabasic acid of benzene obtained as a white crystalline substance; - probably so called from the resemblance of the wartlike crystals to the mammillæ on the surface of prehnite.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.