The Collaborative International Dictionary of English v.0.48:

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.]
   (Zool.)
   Wood-destroying; -- said of certain insects.
   [1913 Webster]