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Br,
symbol for the element brominebromine[Gr.,=stench], volatile, liquid chemical element; symbol Br; at. no. 35; at. wt. 79.904; m.p. –7.2°C;; b.p. 58.78°C;; sp. gr. of liquid 3.12 at 20°C;; density of vapor 7.14 grams per liter at STP; valence −1, +1, +3, +5, or +7.
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Br
(chemistry)
BR
On drawings, abbr. for bedroom.
br
(networking)The country code for Brazil.