Assertion: plutonium | /r/Synonym | the most complex metal
Facets:
Source sentences:
text: Plutonium has been called "the most complex metal" and "a physicist's dream but an engineer's nightmare" for its peculiar physical and chemical properties.
text: Plutonium has been called "the most complex metal" and "a physicist's dream but an engineer's nightmare" for its peculiar physical and chemical properties.