tetrapod

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noun tet·ra·pod \ˈte-trə-ˌpäd\

Definition of tetrapod

  1. :  a vertebrate (such as an amphibian, a bird, or a mammal) with two pairs of limbs

Did You Know?

The earliest tetrapods, or "four-footed" animals, were mammal-like reptiles that evolved before the rise of the dinosaurs and ranged from mouse-sized to cow-sized. Today the tetrapods include the reptiles, the amphibians, the birds, and the mammals—including humans. Though the fish aren't classified as tetrapods, it's quite possible that our own limbs began as paired fins hundreds of millions of years ago.

Origin and Etymology of tetrapod

New Latin tetrapodus, from Greek tetrapod-, tetrapous four-footed, from tetra- + pod-, pous foot — more at foot


First Known Use: circa 1891

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WORD OF THE DAY

to cast off or become cast off

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