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supramaxillary

British  
/ ˌsuːprəmækˈsɪlərɪ /

adjective

  1. of or relating to the upper jaw

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Supramaxillary, sū-pra-mak′si-lā-ri, adj. pertaining to the upper jaw.—n. the superior maxillary or upper jaw-bone.

From Project Gutenberg