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tertial

American  
[tur-shuhl] / ˈtɜr ʃəl /

adjective

  1. pertaining to any of a set of flight feathers situated on the basal segment of a bird's wing.


noun

  1. a tertial feather.

tertial British  
/ ˈtɜːʃəl /

adjective

  1. another word for tertiary tertiary

"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

Etymology

Origin of tertial

1830–40; < Latin terti ( us ) third + -al 1