petrograph
American
[pe-truh-graf, -grahf]
/ ˈpɛ trəˌgræf, -ˌgrɑf /
noun
Etymology
Origin of petrograph
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
