Heartworm Definition
 härtwûrm 
  heartworms
  
    noun
  
 A nematode worm (Dirofilaria immitis) transmitted by mosquitoes or fleas that is parasitic in the bloodstream, esp. in the heart, of dogs, cats, etc.
 Webster's New World 
The condition resulting from infestation with the heartworm.
 American Heritage 
Other Word Forms of Heartworm
Noun
Singular:
 heartwormPlural:
 heartwormsHeartworm Is Also Mentioned In
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