D defs.my
Entry 1 sense Webster, 1913

Prehnite

· Prehn·ite · IPA
01 n. A pale green mineral occurring in crystalline aggregates having a botryoidal or mammillary structure, and rarely in distinct crystals. It i…
  1. 1.
    A pale green mineral occurring in crystalline aggregates having a botryoidal or mammillary structure, and rarely in distinct crystals. It is a hydrous silicate of alumina and lime.(Min.)