Source : Webster's Revised Unabridged Dictionary (1913)

Ligniperdous \Lig`ni*per"dous\ (l[i^]g`n[i^]*p[~e]r"d[u^]s), a.
   [L. lignum wood + perdere to destroy: cf. F. ligniperde.]
   (Zo["o]l.)
   Wood-destroying; -- said of certain insects.