synthetic element
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English
[edit]
Noun
[edit]synthetic element (plural synthetic elements)
- A chemical element that does not occur naturally (on Earth) and must be synthesized (manufactured).
Usage notes
[edit]- May or may not include elements that occur naturally on Earth, but in such small amounts that they are, for most practical purposes, synthetic: technetium, promethium, astatine, francium, neptunium, and plutonium.