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rugate
Definitions
[], (Adjective)
Definitions:
- Characterized by wrinkles or ridges; wrinkled.
- Of a filter, coating, etc.: having a refractive index which varies smoothly in a regular, typically sinusoidal, manner with depth.
Phrases:
Origin
:
mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From classical Latin rūgātus having a wrinkled surface from rūga + -ātus
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definition by Oxford Dictionaries