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The Collaborative International Dictionary
Xylophilous

Xylophilous \Xy*loph"i*lous\, a. [Xylo- + Gr. filei^n to love.] (Zo["o]l.) Of or pertaining to the xylophilans.

Wiktionary
xylophilous

a. Living on or in wood, as some fungus and beetles do.