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Definition of Hilliness
1. Noun. The quality of being hilly. "The hilliness of West Virginia" 
Definition of Hilliness
1. n. The state of being hilly.
Definition of Hilliness
1. [n -ES]
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1. Noun. The quality of being hilly. "The hilliness of West Virginia" 
1. n. The state of being hilly.
1. [n -ES]