Definition of supraspecies in US English:

supraspecies

noun

Biology
  • Superspecies Now rare.

adjective

Biology
  • = supraspecificrare.

Origin

1930s; earliest use found in Julian Huxley (1887–1975), zoologist and philosopher. From supra- + species. With use as noun compare earlier superspecies. With use as adjective compare earlier supraspecific.