受体 shòutǐ receptor Origin Definitions Defs Strokes Stroke Words Sentences Sents 受体拮抗剂 shòutǐjiékàngjì receptor antagonist A substance that blocks or dampens a biological response by binding to and blocking a receptor受体素 shòutǐsù leanness-enhancing agent chemical additives like ractopamine or clenbuterol used in livestock feed to increase muscle growth and reduce fat