Where does “shoshonitic” come from?

shoshonitic (English) comes from English shoshonite, from English Shoshone — A member of this people.

shoshonitic (English): Containing, or characteristic of shoshonite

Definitions

  1. Containing, or characteristic of shoshonite

Ancestry of “shoshonitic”, step by step

shoshonitic traces back through two separate lines of ancestry.

via English shoshonite

StepLanguageWordMeaning
1EnglishshoshoniteA form of trachyandesite richer in potassium than...
2EnglishShoshoneA member of this people

via English ic

StepLanguageWordMeaning
1Englishicrelated or pertaining to; having the character of
Every word from English ShoshoneEvery word from English shoshonite