from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A polyamine compound, C7H19N3, found in ribosomes and living tissues and having various metabolic functions. It was originally isolated from semen.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The triamine N-(3-aminopropyl)butane-1,4-diamine, originally obtained from semen, that is involved in cell metabolism.
sperm(i)- + -id(e) + -ine2.(American Heritage® Dictionary of the English Language, Fourth Edition)