Help Wordnik hunt for a million missing words by backing our Kickstarter!


from The Century Dictionary and Cyclopedia

  • n. In petrography, a somewhat altered spherulitic quartz-porphyry or rhyolite (Monteiro). This name, first applied by Haüy to the orbicular diorite of Corsica (corsite or napoleonite), was given because it was thought that only a part of the minerals in the rock was fusible, quartz being at that time considered infusible.


Sorry, no etymologies found.


Sorry, no example sentences found.


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