Entry 2 senses Webster, 1913 Mineralogist /mĭnˌ-ẽr-ăl'-əj-ĭst/ · Min·er·al·o·gist · IPA /mˌɪnərˈælədʒɪst/ 01 n. One versed in mineralogy; one devoted to the study of minerals. 1. One versed in mineralogy; one devoted to the study of minerals. 2. A carrier shell (Phorus).(Zool.)