from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any one of the simplest chemical substances that cannot be decomposed in a chemical reaction. Chemical elements consist of atoms which have the same number of protons.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Sorry, no etymologies found.