Add: 4. Petrogr. A macroscopically visible constituent of coal distinguished by its physical characteristics; a macroscopically distinguishable variety of coal. Cf. maceral n.
Source: wiktionary
Petrogr.
Synonyms for "petrogr." (1 found)
Ranked by relevance and common usage.
Closest matches (1)
Noun(1 words)
Sample sentences
1 total sentences available.
Keep exploring
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.