You searched for:
“tridactyly”
tridactyly
Having three digits on a limb, as with some birds and ancestors of the horse; such as, Protohippus and Hipparion.
This entry is located in the following units:
dactylo-, dactyl-, dactylio-, -dactyl, -dactyla, -dactylia, -dactylic, -dactylism, -dactyloid, -dactylous, -dactyly
(page 12)
tri-, tre-
(page 4)