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boron

['bɔːrɒn, -ɑːn] n
gen. Bor n
chem. Bor n (Borium); Borium n (Borium)
boron A very hard almost colourless crystalline metalloid element that in impure form exists as a brown amorphous powder. It occurs principally in borax and is used in hardening steel ['bɔːrɒn, -ɑːn] n
environ. Bor n
 English thesaurus
Boron ['bɔːrɒn, -ɑːn] abbr.
abbr., scottish B
boron
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