Rhyacian

adj, name

adj, name ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Of a geologic period within the Paleoproterozoic era from about 2300 to 2050 million years ago. not-comparable
Proper Noun
  1. 1
    The Rhyacian period.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.