晩産 ばんさん Meanings Noun post-term delivery; postmature delivery See also: 過期産 (かきさん). giving birth at an above-average age Kanji 晩 nightfall. Read as バン. 産 produce. Read as サン. Words containing 晩産 晩産化 (ばんさんか) increase in the average age of childbirth Jinuma: Japanese Dictionary · Word lists