The Collaborative International Dictionary of English v.0.48:

Spongiose \Spon"gi*ose`\ (sp[u^]n"j[i^]*[=o]s`), Spongious
\Spon"gi*ous\ (sp[u^]n"j[i^]*[u^]s), a. [L. spongiosus,
   spongeosus: cf. F. spongieux. See Sponge.]
   Somewhat spongy; spongelike; full of small cavities like
   sponge; as, spongious bones.
   [1913 Webster]