Meaning of petrogr. | Babel Free
Examples
“Add: 4. Petrogr. A macroscopically visible constituent of coal distinguished by its physical characteristics; a macroscopically distinguishable variety of coal. Cf. maceral n.”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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