from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A crystalline polyamine compound, C10H26N4, present in ribosomes and found widely in living tissues along with spermidine. It was originally isolated from semen.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A polyamine, N,N'-bis(3-aminopropyl) butane-1,4-diamine, originally extracted from sperm, that is involved in cellular metabolism
from The Century Dictionary and Cyclopedia
- n. A colorless crystalline basic compound, C10H26N4, found, in combination, in spermatic fluid and in the heart and liver of calves.
Sorry, no etymologies found.