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apsidal
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apterous
ap·ter·ous [ áptərəss ]


adjective 
Definition:
 
lacking wings: describes an insect that has no wings
[Late 18th century. < Greek apteros (see apteral)]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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