柯林斯詞典prostaglandin /?pr?st??ɡl?nd?n/ 1. N any of a group of potent hormone-like compounds composed of essential fatty acids and found in all mammalian tissues, esp human semen. Prostaglandins stimulate the muscles of the uterus and affect the blood vessels; they are used to induce abortion or birth 前列腺素 返回 prostaglandin