Hadean Time
[ hā-dē′ən ]
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The period of geologic time between 4.6 and 3.8 billion years ago, when the solar system was forming and the Earth was solidifying. No rocks are known from this time, as they were presumably eroded or drawn deep into the Earth and melted through the processes of plate tectonics. See Chart at geologic time.
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QUIZ YOURSELF ON OPPOSITES OF RED BEFORE YOU TURN SCARLET
We have a challenge that will make you blush: do you know the many words and ways to describe the opposite of red?
Question 1 of 7
Which of the following colors is used to symbolize AIR?
Words nearby Hadean Time
had better, haddock, Haddon, Haddonfield, hade, Hadean Time, hadedah, Haden, had enough, Hades, Hadfield
The American Heritage® Science Dictionary
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