The quality or state of being wrinkled or having a rough surface. The rugosity of the old leather jacket gave it a unique character.
A wrinkle or a series of wrinkles on a surface. The rugosity on the surface of the rock made it difficult to climb.
A quantitative measure of the roughness or complexity of a surface, especially used in geological or biological studies. Researchers used a chain-and-tape method to determine the rugosity of the coral reef.