マスト細さい胞ぼうマストさいぼうMeanings1nounmast cell; mastocytebiology›Biology term for a type of immune cell involved in allergic reactions. Also called 肥満細胞 (ひまんさいぼう).See also: 肥満細胞マスト細さい胞ぼうはアレルギー反はん