Akademik

cow
1. A generator for short-lived isotopes based upon successively eluting or otherwise separating (“milking”) a short-lived radioactive daughter from a longer-lived parent; e.g., 99mTc from 99Mo, 113mIn from 113Sn. 2. The mature female of domestic cattle (genus Bos); also the mature female of certain other animals such as buffalo, elephant, and whale.
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curse of womanhood (menstruation)

Medical dictionary. 2011.