from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of very many isomers of the aliphatic hydrocarbon having twenty-one carbon atoms, but especially n-heneicosane CH3(CH2)19CH3
from The Century Dictionary and Cyclopedia
- n. A colorless hydrocarbon, C21H44, found in brown coal paraffin. It melts at 40.4° C., and boils at 215° C. under 15 millimeters pressure.
Sorry, no etymologies found.