Definition of "lyonnaise" [ly•on•naise]

• Cooked with onions: lyonnaise potatoes; potatoes lyonnaise. (adjective)

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.

• "The modern glass building now the home of just under 60 commerçants and restaurants was finished in the early 70's and has evolved into the haut lieu of la gastronomie lyonnaise, rather surprising when one steps into the glass and cement building."
• "The modern glass building now the home of just under 60 commerçants and restaurants was finished in the early 70's and has evolved into the haut lieu of la gastronomie lyonnaise, rather surprising when one steps into the glass and cement building."
• "Friday, I precooked some of my Thanksgiving dishes—lyonnaise potato gratin, sausage and cornbread stuffing—in between hours of mapping out exactly how the stencil would go on the wall and testing my painting techniques on cardboard."