a. 1. Soft, and full of cavities; of an open, loose, pliable texture; as, a spongy excrescence; spongy earth; spongy cake; spongy bones. [ 1913 Webster ]
2. Wet; drenched; soaked and soft, like sponge; rainy. “Spongy April.” Shak. [ 1913 Webster ]
3. Having the quality of imbibing fluids, like a sponge. [ 1913 Webster ]
Spongy lead (Chem.), sponge lead. See under Sponge. -- Spongy platinum. See under Platinum. [ 1913 Webster ]