saproxylic adjective 2noun 1forms 1 adjective2 •Relating to, or causing, the decay of wood. •That lives in or feeds on decaying wood.The study says 18% of saproxylic beetles – which depend on dead and decaying wood for some of their lifecycle – now exist on a conservation plane between “vulnerable” and “critically endangered”. — 2018 noun1 •Any organism that lives in decaying wood formssaproxylics