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Any of various mostly microscopic wormlike invertebrates of the obsolete phylum Aschelminthes, including the nematodes, rotifers, and gastrotrichs.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
aschelminthAny member of the phylum Aschelminthes, see there.
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