gneissoid

gneissoid [nahy-soid] ExamplesWord Origin adjective

1. resembling gneiss.

Origin of gneissoid First recorded in 1840–50; gneiss + -oid Examples from the Web for gneissoid Historical Examples of gneissoid

At this distance, rapids commence, and the bed of the river exhibited greenstone and gneissoid boulders.

Personal Memoirs Of A Residence Of Thirty Years With The Indian Tribes On The American Frontiers

Henry Rowe Schoolcraft