Tertial
Pronunciation : Ter"tial
Part of Speech : a.
Etymology : [From L. tertius third, the tertial feathers being feathers of the third row. See Tierce.] (Zo?l.)
Definition : Defn: Same as Tertiary.
& n.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder