- Pretertiary
- Pretertiary Pre*ter"ti*a*ry, a. (Geol.) Earlier than Tertiary. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Pretertiary
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Diabase — Di a*base, n. [F. diabase, fr. Gr. ? a crossing or passing over, fr. ?; ? + ? to go; so called by Brongniart, because it passes over to diorite.] (Min.) A basic, dark colored, holocrystalline, igneous rock, consisting essentially of a triclinic… … The Collaborative International Dictionary of English
