けいしつかいめん 珪質海綿 LinksSentence search for 珪質海綿Sentence search for けいしつかいめんKanji details for 珪, 質, 海 and 綿Edit in JMdict Noun1. siliceous sponge (any sponge other than those of class Calcarea) Discussions Log in to talk about this word.