(ˌɛpɪˈθɜːməl) adj1. (Minerals) mineralogy relating to minerals formed from warm, shallow water2. (General Physics) physics having energy above that of thermal agitation
epithermal
epithermal
[¦ep·ə′thər·məl] (geology) Pertaining to mineral veins and ore deposits formed from warm waters at shallow depth, at temperatures ranging from 50-200°C, and generally at some distance from the magmatic source.