geological era

Found in Anh - Anh (Wordnet)

Definition Noun : 1. A major division of geological time : A "geological era" is a large, fundamental unit of time in Earth's history, used to categorize and study the planet's long-term development. It represents a significant span of time characterized by distinct major events in the geological and biological record. 2. A subdivision of an eon : In the hierarchical structure of geologic time,...