tertial

[tur-shuh l] /ˈtɜr ʃəl/
adjective
1.
pertaining to any of a set of flight feathers situated on the basal segment of a bird's wing.
noun
2.
a tertial feather.
Origin
1830-40; < Latin terti(us) third + -al1
Examples from the web for tertial
  • tertial coverts have broad edging which is pale brown.
  • Immature tertial coverts are narrow and yellow-green.
  • tertial: the innermost flight flight feathers of the wing, attached to the humerus bone in the bird's upper arm.
British Dictionary definitions for tertial

tertial

/ˈtɜːʃəl/
adjective, noun
1.
another word for tertiary (sense 5), tertiary (sense 6)
Word Origin
C19: from Latin tertius third, from ter thrice, from trēs three