| 单词 | petrograph | 
| 释义 | petrograph[ pe-truh-graf, -grahf ] / ˈpɛ trəˌgræf, -ˌgrɑf / nounpetroglyph.  Origin of petrographFirst recorded in 1805–15; petro-1 + -graph Words nearby petrographpetrog., petrogenesis, petroglyph, Petrograd, petrogram, petrograph, petrography, petrol, petrolatum, petrol bomb, petrolene Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 | 
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