adj.
Having two successive sets of teeth, deciduous and permanent.
[From Greek diphuēs, double (di-, two; see di-1) + phuein, to grow + -ODONT.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.