tertial
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tertial
(ˈtɜːʃəl)[C19: from Latin tertius third, from ter thrice, from trēs three]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ter•tial
(ˈtɜr ʃəl)adj.
1. pertaining to any of a set of flight feathers situated on the basal segment of a bird's wing.
n. 2. a tertial feather.
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