adjective Etymology: Hades Date: 1984 of, relating to, or being the aeon of history between the formation of the solar system and the formation of the first rocks on the earth, ~ noun
HADEAN
Meaning of HADEAN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012