polybromide

from The Century Dictionary.

• noun In chem., a simple bromide containing in its molecule more than a single atom of bromine.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A bromide containing more than one atom of bromine in the molecule.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry A molecule or ion containing three or more bromine atoms
• adjective chemistry containing three or more bromine atoms