Pronunciation: (lam'u-nu), [key]
—pl. -naePronunciation: (-nē"), [key] -nas.
1. a thin plate, scale, or layer.
2. a layer or coat lying over another, as the plates of minerals or bones.
3. Bot.the blade or expanded portion of a leaf.
4. Geol.a layer of sediment or sedimentary rock only a small fraction of an inch (less than a centimeter) in thickness.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.