The Collaborative International Dictionary
Lignitiferous
Lignitiferous \Lig`ni*tif"er*ous\ (l[i^]g`n[i^]*t[i^]f"[~e]r*[u^]s), a. [Lignite + -ferous.] Producing or containing lignite; lignitic.
Wiktionary
lignitiferous
a. Producing or containing lignite; lignitic.