Definition of "bilayer" [bilayer]

• A structure, such as a film or membrane, consisting of two molecular layers: a phospholipid bilayer. (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.

• "When you put two layers of graphene together, we call that a bilayer system, and that, in itself, is completely different again, physical and electrical, from the single layer, and completely different from many stacks of graphene for graphite."
• "Carol Johnson took the podium of a lecture hall one recent morning to walk 79 students enrolled in an introductory biology course through diffusion, osmosis and the phospholipid bilayer of cell membranes."
• "The flexible plastic bilayer pulled away from his skin cleanly."