Crossword clues for tertial
The Collaborative International Dictionary
Tertial
Tertial \Ter"tial\, a. & n. [From L. tertius third, the tertial feathers being feathers of the third row. See Tierce.] (Zo["o]l.) Same as Tertiary.
Wiktionary
tertial
n. (context ornithology English) Any flight feather attached to the humerus (upper arm) of a bird.