elegance

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Refinement, grace, and beauty in movement, appearance, or manners.
2. n. Tasteful opulence in form, decoration, or presentation.
3. n. Restraint and grace of style.
4. n. Scientific exactness and precision.
5. n. Something elegant.

Century Dictionary and Cyclopedia

1. n. The state or quality of being elegant; beauty resulting from perfect propriety or from exact fitness, symmetry, or the like; refinement of manner, quality, or appearance: as, elegance of dress.
2. n. That which pleases by its nicety, symmetry, purity, or beauty; an elegancy: as, the elegances of polite society. Synonyms Grace, beauty, polish. See comparison under elegant.

Wiktionary

1. n. Grace, refinement, and beauty in movement, appearance, or manners
2. n. Restraint and grace of style
3. n. The beauty of an idea characterized by minimalism and intuitiveness while preserving exactness and precision
4. n. A refinement or luxury

GNU Webster's 1913

1. n. The state or quality of being elegant; beauty as resulting from choice qualities and the complete absence of what deforms or impresses unpleasantly; grace given by art or practice; fine polish; refinement; -- said of manners, language, style, form, architecture, etc.
2. n. That which is elegant; that which is tasteful and highly attractive.

WordNet 3.0

1. n. a quality of neatness and ingenious simplicity in the solution of a problem (especially in science or mathematics)
2. n. a refined quality of gracefulness and good taste