プロラクチンプロラクチンFreq.FrequencyTop 100,000Meanings1nounprolactinA hormone that stimulates milk production; used in medical and biological contexts.プロラクチンは乳にゅう腺せんの発はっ達たつと乳にゅう汁じゅう分ぶん泌ぴつを促そく進しんするホルモンです。Prolactin is a hormone that promotes mammary gland development and milk secretion.