The Collaborative International Dictionary
Spongious
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.
Wiktionary
spongious
a. Characteristic of a sponge; spongy