Definition of boron noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈbɔːrɒn//
; NAmE NAmE//ˈbɔːrɑːn//
[uncountable] (symbol B)
jump to other results
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).
See the Oxford Advanced American Dictionary entry: boron