plantigradism en · NOUN
Etymology
From plantigrade + -ism.
Meanings
-
(uncountable) Plantigrade locomotion.
Contrary evidence that Coryphodon, so far from being unguligrade, was transitional between complete plantigradism and digitigradism, is given below.
1898, Henry Fairfield Osborn, A Complete Skeleton of Coryphodon Radians: