Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having two functions: bifunctional neurons.
  • adj. Chemistry Having or involving two functional groups or binding sites: bifunctional reagents.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having two functions
  • adj. having two functional groups or binding sites
  • adj. involving two functional groups or binding sites

Etymologies

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