n. The state of being, or degree to which something is rugged.
The Century Dictionary and Cyclopedia
n. The character or state of being rugged.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being difficult to do
n. the property of being big and strong
n. the quality of being topologically uneven
Word Usage
"For now, he says on-line tools like Spreadsheet or thinkfree.com's suite of products will have to become more durable to meet the "ruggedness" enterprise users are accustomed to under Microsoft's Office applications."