Definify.com
Webster 1913 Edition
Plantigrade
Plan′ti-grade
,Adj.
[L.
planta
sole of the foot + gradi
to walk: cf. F. plantigrade
.] (Zool.)
(a)
Walking on the sole of the foot; pertaining to the plantigrades.
(b)
Having the foot so formed that the heel touches the ground when the leg is upright.
Plan′ti-grade
,Noun.
(Zool.)
A plantigrade animal, or one that walks or steps on the sole of the foot, as man, and the bears.