準化石 じゅんかせき Meanings Noun subfossil See also: 半化石 (はんかせき). Kanji 準 standard. Read as ジュン. 化 transform 石 stone. Read as セキ. Words containing 準化石 示準化石 (しじゅんかせき) index fossil Word lists Geology Jinuma: Japanese Dictionary · Word lists