a. [f. LIGNITE + -IC.] Pertaining to, or of the nature of, lignite.
1843. in Humble, Dict. Geol. etc.
1862. Dana, Man. Geol., iii. 507. A Lignitic formation.
1884. Manch. Exam., 20 Aug., 6/3. Large masses of peat, lignitic branches … and animal remains.
