coal ranks

A form of coal rank — The measure or degree of the progressive coalification (organic metamorphism) of a coal, often expressed in terms of vitrinite reflectance.

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Meanings

noun
  1. pluralplural of coal rank
Cite this entry
APA

coal ranks. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/coal%20ranks

MLA

“coal ranks.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/coal%20ranks. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “coal ranks,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/coal%20ranks.

Source: coal ranks on Wiktionary, CC BY-SA 4.0.