from The Century Dictionary.
- In geology, noting crystalline or fire-formed rocks, in contradistinction to deuterogenic, which notes those formed from them by mechanical action.
- In botany, noting those intercellular spaces of plants which are formed when the tissues begin to differentiate. Compare hysterogenic, lysigenous, sehizogenic.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Of or pertaining to an early or original race or
Sorry, no etymologies found.
His mind was essentially what the geologists would call 'a tertiary formation; 'theirs were' protogenic. '