Definitions

from The Century Dictionary and Cyclopedia

  • n. In petrography, a name suggested by Pirsson (1895) for porphyries in which quartz, the feldspars, and feldspathic minerals preponderate: opposed to lamprophyre.

Etymologies

Sorry, no etymologies found.

Examples

Sorry, no example sentences found.

Wordnik is becoming a not-for-profit! Read our announcement here.

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.