| annelidan | (adjective) relating to or belonging to or characteristic of any worms of the phylum Annelida | Synonyms: annelid |
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| araneidan | (adjective) relating to or resembling a spider | Synonyms: araneidal |
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| arthropodan | (adjective) of or relating to invertebrates of the phylum Arthropoda | Synonyms: arthropodal, arthropodous |
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| branchiopodan | (adjective) of or relating to or characteristic of the subclass Branchiopoda | Synonyms: branchiopod, branchiopodous |
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| cephalopodan | (adjective) relating or belonging to the class Cephalopoda | Synonyms: cephalopod |
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