rotary abutment meter

rotary abutment meter

[′rōd·ə·rē ə′bət·mənt ‚mēd·ər]
(engineering)
A type of positive displacement meter in which two displacement rotating vanes interleave with cavities on an abutment rotor in such a way that the three elements are geared together.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.