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petrograph

American  
[pe-truh-graf, -grahf] / ˈpɛ trəˌgræf, -ˌgrɑf /

noun

  1. petroglyph.

Etymology

Origin of petrograph

First recorded in 1805–15; petro- 1 + -graph

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.