Definitions

1. noun

The state or process of developing four limbs or the evolution of four-limbed creatures from ancestors without limbs.

“The development of tetrapody in early amphibians marked a significant milestone in the history of life on Earth.”

2. noun

A stage in the evolution of a four-limbed vertebrate.

“Tetrapody is a crucial aspect of the vertebrate body plan, characterized by the development of four limbs.”