What is another word for precambrian?
Pronunciation: [pɹɪkˈambɹi͡ən] (IPA) 
Precambrian is a geological term that refers to the eons of the Earth's history before the Phanerozoic era. It covers about 88% of the Earth's history and is divided into three periods: Hadean, Archean, and Proterozoic. Precambrian is a well-known term, but there are other synonyms that are less familiar. These include Cryptozoic, Azoic, and Eozoic. The term Cryptozoic means "hidden life" and is used to refer to the time before fossils appeared. Azoic, on the other hand, means "without life," while Eozoic means "dawn of life." Both terms are used to describe the early geological history of the Earth before the emergence of life.
