Telluric

Part of speech: adjective (a.)

1. Of or pertaining to the earth; proceeding from the earth. Amid these hot, telluric flames. Carlyle.

2. Of or pertaining to tellurium; derived from, or resembling, tellurium; specifically, designating those compounds in which the element has a higher valence as contrasted with tellurous compounds; as, telluric acid, which is analogous to sulphuric acid. Telluric bismuth (Min.), tetradymite. -- Telluric silver (Min.), hessite.