Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Before the evolution of mammals.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

pre- +‎ mammalian

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Examples

  • Mostly, she follows her “gut,” which, by the way, biologists call the “second brain”: the place where premammalian life-forms registered external stimuli.

    THE HUSBANDS AND WIVES CLUB LAURIE ABRAHAM 2010

  • Seeking and Lust have even earlier, premammalian origins.

    Signs of the Times 2009

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