noun
step-parent
Refers to a stepmother or stepfather; the reading ままおや is the most common, while けいしん is a less common on'yomi reading restricted to the kanji form 継親.
彼は継親と一緒に暮らしている。
He lives with his step-parent.
継親との関係は難しいこともある。
Relationships with step-parents can be difficult.
Mixed kanji-kana spelling; less common but still used.
Compound of 継 (step-, from the verb 継ぐ 'to succeed') and 親 (parent). The reading ままおや uses the kun'yomi of both characters, while けいしん is the on'yomi reading.