- any annelid worm of the class Hirudinea, comprising the leeches.
- belonging or pertaining to the Hirudinea.
Origin of hirudinean
1825–35; < New Latin Hirudine(a) (Latin hirūdin- (stem of hirūdō) leech + -ea, neuter plural of -eus adj. suffix) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hirudinean
This is the hirudinean of which we have spoken above, which is allied transitionally to the trematoda.Animal Parasites and Messmates
P. J. Van Beneden