Boring Billion

Proper noun

Meaning

Boring Billion

(geology) The period of time from 1.8 Gya to 800 Mya, on Earth, lying in the middle of the Proterozoic.

Source: en.wiktionary.org

Synonyms

barren billion dullest time in earth's history

Close letter words and terms

boring boring as beans boring attack boring bit boring body boring box