piston corer
(redirected from piston corers)piston corer
[′pis·tən ¦kȯr·ər] (mechanical engineering)
A steel tube which is driven into the sediment by a free fall and by lead attached to the upper end, and which is capable of recovering undistorted vertical sections of sediment.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.