- ligninA complex non-carbohydrate aromatic polymer present in all wood.
- lignumDead wood, typically in the context of a substrate for lichens.
- ligniformLike wood.
- lignifyTo become wood.
- ligniperdousWood-destroying
- lignivorousThat feeds on wood.
- ligno-wood
- lignum vitaeguaiacum trees, of species Guaiacum officinale and Guaiacum sanctum.