menstruum

名词 menstruum:

1. (archaic) a solvent
2. the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause--Aristotle
   同义词：menstruation, menses, catamenia, period, flow

men.stru.um

n.（名词）
【复数】 men.stru.ums 或 men.stru.a [-strô-…]
A solvent, especially one used in extracting compounds from plant and animal tissues and preparing drugs.
溶媒：一种溶剂，尤指用于从植物和动物组织中提取化合物并制成药剂

来源：
Middle English [menstruation]
中古英语 [月经]
from Medieval Latin
源自 中世纪拉丁语
sing. of Latin mônstrua [menses] * see menstruate
拉丁语 mônstrua的单数 [月经来潮] *参见 menstruate