Definitions for "Clast"
A rock fragment or grain resulting from the breakdown of larger rocks.
an individual piece of pre-existing rock.
a rock/mineral fragment
an achievement test administered to sophomores enrolled in community colleges and universities which measures skills in Reading (R), Writing (W), Essay (E), and Computation (M).
College Level Academics Skills Test
College Level Academic Skills Test
an individual pebble, cobble, or boulder.