Dictionary

rugate en · ADJ

Pronunciation

• /ˈɹuːɡeɪt/
• /ˈɹuːɡət/

Etymology

From Latin rugatus, past participle of rugare (“to wrinkle”), from ruga (“a wrinkle”).

Meanings

1. Having alternate ridges and depressions; wrinkled.
   • Unifacial, superior surface transversely rugate, with minute oririmes at the bottom of the furrows c. 1848, James Dwight Dana, Zoophytes:
2. Having a varying refractive index.
   • Researchers have focused on various manufactured periodically nonhomogeneous dielectric materials, including rugate filters and periodically multilayered materials. 2013, John Polo, Tom Mackay, Akhlesh Lakhtakia, Electromagnetic Surface Waves: A Modern Perspective, page 193:
   • Rugate coatings typically consist of a single layer deposited onto a substrate where the refractive index of the layer continuously changes as a function of depth. 2002, Bruce E. Perilloux, Thin-film Design, page 7:

Forms

Synonyms

bewrinkled · rugose · wrinkly