| hirudine | <zoology> Of or pertaining to the leeches. Source: Websters Dictionary (01 Mar 1998) |
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| hirudinea | <zoology> An order of Annelida, including the leeches. Synonym: Hirudinei. Origin: NL, fr. L. Hirudo, hirudinis, a leech. Source: Websters Dictionary (01 Mar 1998) |