Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A dark, vitreous mineraloid produced by surface oxidation of lignite

Etymologies

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Examples

  • "Lignite, also known as leonardite, mined lignin, brown coal, and slack, is an important constituent to the oil well, drilling industry.

    Cannabis Culture Magazine Subcool 2009

  • Lignite, or leonardite as it will be referred as hereafter, is technically known as a low rank coal between peat and sub-bituminous.

    Cannabis Culture Magazine Subcool 2009

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