曹灰硼石 そうかいほうせき Meanings Noun ulexite See also: ウレキサイト. Kanji 曹 sergeant. Read as ソウ. 灰 ash. Read as カイ. 硼 sound of stones struck together; boron. Read as ホウ. 石 stone. Read as セキ. Word lists Geology Jinuma: Japanese Dictionary · Word lists