- noun a chemical element. It is used in various industrial processes and in antiknock additives for petrol.
- A nonmetallic chemical element whose atomic number is 35. It is a dark, reddish-brown liquid which produces suffocating fumes. It has over 30 known isotopes, of which 2 are stable. Its has uses in spectroscopy and photography. It is a halogen, and its chemical symbol is Br.
- chemical symbol Br
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