Definitions
Wiktionary
- 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.
WordNet 3.0
- 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
Examples
“Less than nine months later, Kirkman did a voluntary recall of seven of their products because they contained high levels of antimony, a chemical element used in flameproofing, enamels, and electronics—and one that some anti-vaccine activists had recently been proposing as a potential cause of autism.”
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