Opisthopora
Opisthopora
[¦ä·pəs¦thäp·ə·rə] (invertebrate zoology)
An order of the class Oligochaeta distinguished by meganephridiostomal, male pores opening posteriorly to the last testicular segment.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.