hirudinea

from WordNet (r) 3.0 (2006)

Hirudinea
    n 1: hermaphroditic aquatic or terrestrial or parasitic annelids
         [syn: {Hirudinea}, {class Hirudinea}]

from The Collaborative International Dictionary of English v.0.48

Hirudinea \Hir`u*din"e*a\, n. pl. [NL., fr. L. hirudo,
   hirudinis, a leech.] (Zool.)
   An order of Annelida, including the leeches; -- called also
   {Hirudinei}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Annelida \An*nel"i*da\, n. pl. [NL. See {Annelid}.] (Zool.)
   A division of the Articulata, having the body formed of
   numerous rings or annular segments, and without jointed legs.
   The principal subdivisions are the {Ch[ae]topoda}, including
   the {Oligoch[ae]ta} or earthworms and {Polych[ae]ta} or
   marine worms; and the {Hirudinea} or leeches. See
   {Ch[ae]topoda}.
   [1913 Webster]

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