Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: archduke
Next word: arched
Definition of: Archean
(är·kē′ən) adjective Geol.
Pertaining to a rock group associated with the Archeozoic era of earth's history, consisting of the oldest stratified rocks, predominantly igneous and without fossil remains. Also Ar·chae′an. [<Gk. archaios ancient <archē beginning]
Comment about this word, ask questions, or add new information about this topic: