Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A band in bituminous coal, characterized by a sheetlike irregular fracture, a silky luster, and fine intercalations of durain.

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

  • noun mineralogy A form of coal having stratifications parallel to the bedding plane

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin clārus, bright; see kelə- in Indo-European roots + (fus)ain.]

Examples

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