contact bed

contact bed

[′kän‚takt ‚bed]
(civil engineering)
A bed of coarse material such as coke, used to purify sewage.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
To sleep as Jefferson would have slept, contact Bed and Breakfast, City Center at 1 (215) 735-1137.