Definition of "tertial" []

• Of, relating to, or designating the third row of flight feathers on the basal section of a bird's wing. (adjective)
• A tertial feather. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Sight read not only tertial music but also try reading more contemporary music."
• "Still some cherries on my tertial stand, although the vireos were working on them just above my head."