Definitions

1. noun

A pair of appendages or limbs that serve as a base or support for other limbs, especially in an animal.

“The fossilized remains of an ancient species showed the presence of metapodia that were used for walking on land.”

2. noun

A pair of appendages or limbs that have evolved from a limb or other structure, often indicating a transition from aquatic to terrestrial life.

“The discovery of metapodia in the fossil record suggests that some ancient species made a transition from water to land during their evolution.”