Spongy \Spon"gy\, a. 1. Soft, and full of cavities; of an open, loose, pliable texture; as, a spongy excrescence; spongy earth; spongy cake; spongy bones. 2. Wet; drenched; soaked and soft, like sponge; rainy. ``Spongy April.'' --Shak. 3. Having the quality of imbibing fluids, like a sponge. {Spongy lead} (Chem.), sponge lead. See under {Sponge}. {Spongy platinum}. See under {Platinum}.