boron
noun/ˈbɔːrɒn/
/ˈbɔːrɑːn/
[uncountable] (symbol B)
- a chemical element. Boron is a solid substance used in making steel alloys and parts for nuclear reactors.Word Originearly 19th cent.: from borax, on the pattern of carbon (which it resembles in some respects).
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boron