Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
petrograph .
Etymologies
Sorry, no etymologies found.
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Examples
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You will see this at a glance by the figure of one of those petrographs, which I reproduce in juxtaposition with yours:
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The figure you sketch for me is closely allied, for example, to very ancient ritualistic petrographs in the lava regions of Arizona.
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