D defs.my
Entry 2 senses Webster, 1913

Mineralogy

/mĭnˌ-ẽr-äl'-əj-ē/ · Min·er·al·o·gy · IPA /ˌmɪnəˈɹɑləd͡ʒi/
01 n. The science which treats of minerals, and teaches how to describe, distinguish, and classify them.
pl. Mineralogies ((#))
  1. 1.
    The science which treats of minerals, and teaches how to describe, distinguish, and classify them.
  2. 2.
    A treatise or book on this science.