Roots blower(redirected from Roots type supercharger)
Also found in: Wikipedia.
Roots blower[′rüts ‚blō·ər]
A compressor in which a pair of hourglass-shaped members rotate within a casing to deliver large volumes of gas at relatively low pressure increments.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.