Definition of protohuman in English:

protohuman

noun

Anthropology
  • A hypothetical prehistoric primate, resembling humans and thought to be their ancestor, whose profile has been compiled mainly from fossil evidence.

    • ‘To them, those skulls portray a group of protohumans whose survival depended on withstanding terrible blows to the head.’
    • ‘Fossils found in East Africa suggest that protohumans roamed the area more than 20 million years ago.’

adjective

Anthropology
  • Relating to or denoting a protohuman.

    ‘protohuman hominids’
    ‘this primitive hunter-gatherer society was certainly protohuman’
    • ‘During the quadrupedal phase of our evolution, protohuman males copulated protohuman females from behind.’
    • ‘I mean, they're human or protohuman or whatever.’
    • ‘Fleeing the destruction of their own planet, the Martians had, five millions years previously, interbred with protohuman hominids in order to perpetuate their species.’
    • ‘In giving an account of the evolution of music, he traces its origin to mimicry in behaviour and vocalisation of animals in the protohuman environment, with the subsequent selection on the social coordination of musical abilities.’

Pronunciation:

protohuman

/ˈprəʊtəʊˈhjuːmən/