pterostigma

noun ptero·stigma \ˌterə+\

Definition of pterostigma

plural

pterostigmata

  1. :  an opaque thickened spot on the costal margin of the wing of an insect

pterostigmal

adjective

pterostigmatic

or

pterostigmatical

\¦terə+\ adjective

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Origin and Etymology of pterostigma

New Latin, from pter- + Latin stigma


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