coal rank
coal rank · coal ranks
The measure or degree of the progressive coalification of a coal, often expressed in…The measure or degree of the progressive coalification (organic metamorphism) of a coal, often expressed in terms of vitrinite reflectance.
Meaning
1 senses(countable, uncountable)The measure or degree of the progressive coalification (organic metamorphism) of a coal, often expressed in terms of vitrinite reflectance.
Forms
plural: coal ranks| Singular | coal rank |
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| Plural | coal ranks |
regular
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable