| NOUN | animal | class Hirudinea, Hirudinea | hermaphroditic aquatic or terrestrial / terrestrial or parasitic annelids |
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| Meaning | hermaphroditic aquatic or terrestrial / terrestrial or parasitic annelids. | |
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| Synonym | Hirudinea | |
| Member of | Annelida, phylum Annelida | segmented worms |
| Members | Hirudinidae, family Hirudinidae | A family of Hirudinea |
| leech, bloodsucker, hirudinean | carnivorous or bloodsucking aquatic or terrestrial / terrestrial worms typically having a sucker at each end | |
| Broader | class | (biology) a taxonomic group containing one or more orders |