Definition of Ediacara in US English:

Ediacara

noun

  • Attributive Designating or relating to an association of soft-bodied marine organisms of the late Precambrian, known from fossil remains in a sedimentary formation from the Ediacara Hills, South Australia, and also found in other locations worldwide. Especially in "Ediacara fauna".

Origin

1950s; earliest use found in Nature: a weekly journal of science. From the name of the Ediacara Hills in South Australia.