[groh-uh n, grou-]
- decomposed granite.
Origin of growan
1745–55; < Cornish *growan (cognate with Breton grouan), derivative of grou gravel
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for growan
They occur both in the “killas” or clay-slate, and in the “growan” or granite.
The patent was obtained in 1768, and the materials were described as growan stone and growan clay.
Growan stone and Cornish Kaolin were added to the cream ware body, which enabled earthenware to compete successfully with china.Chats on Old Earthenware