spongĭōsus or spongĕōsus, a, um, adj. [spongia],
spongy , porous (post-Aug.): pulmo, Cels. 4, 1; Plin. 11, 37, 72, § 188: pumices, id. 36, 21, 42, § 155: panis, id. 18, 11, 27, § 105.