Definitions

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

  • adj. Having two successive sets of teeth, deciduous and permanent.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having two successive sets of teeth (deciduous and permanent), one succeeding the other.
  • n. Any creature with two successive sets of teeth.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having two successive sets of teeth (deciduous and permanent), one succeeding the other; ; -- opposed to monophyodont.

from The Century Dictionary and Cyclopedia

  • Having two sets of teeth, as a mammal; growing in two sets, as teeth: applied both to the system of dentition and to the animals which have such a system: opposed to monophyodont and polyphyodont. See II.
  • n. A mammal which has two sets of teeth.

Etymologies

From Greek diphuēs, double (di-, two; see di-1) + phuein, to grow; see bheuə- in Indo-European roots + -odont.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Ancient Greek διφυής (diphuēs, "double") + ὀδόντος (odontos) (genitive of ὀδούς (odous, "tooth")). (Wiktionary)

Examples

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