Linguistics Of or being a root: a radical form. 6. Botany. a. Of, relating to, or arising from a root: radical hairs. b. Arising from the base of a stem or from a below-ground stem or rhizome: radical leaves.
The crater has been named the Barringer Crater in honor of Daniel Barringer, who was first to suggest that it was produced by meteorite impact. It is also referred to simply as Meteor Crater. The crater is located approximately 69 km east of Flagstaff, near Winslow in the northern Arizona desert of the United States.
NASA Mars Weathercam Helps Find Big New Crater. Researchers have discovered on the Red Planet the largest fresh meteor-impact crater ever firmly documented with before-and-after images. The images were captured by NASA's Mars Reconnaissance Orbiter. The crater spans half the length of a football field and first appeared in March 2012.