1. The state of being in leaf.
2. Decoration with sculpted or painted foliage.
3. Architecture Decoration of an opening with cusps and foils, as in Gothic tracery.
a. The act, process, or product of forming metal into thin leaf or foil.
b. The act or process of coating glass with metal foil.
a. The process of numbering consecutively the leaves of a book or manuscript.
b. The leaves so numbered.
6. Geology The set of layers visible in many metamorphic rocks as a result of the flattening and stretching of mineral grains during metamorphism.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.