thyridium

noun thy·rid·i·um \-dēəm\

Definition of thyridium

plural

thyridia

\-ēə\
  1. 1 :  a pale spot in the wing vein of some insects especially of the orders Hymenoptera and Trichoptera

  2. 2 :  one of a pair of oval pits on the second abdominal tergite of some hymenopterans

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Origin and Etymology of thyridium

New Latin, from Greek thyridion window, diminutive of thyra door


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