Cryogenian
adj, name
adj, name ·Rare ·Advanced level
Definitions
Adjective
- 1 Of a geologic period within the Neoproterozoic era from about 850 to 600 million years ago.
Proper Noun
- 1 The Cryogenian period.
Etymology
From cryogenic (“of low temperature”) + -ian.
More for "cryogenian"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.