Pronunciation: (su-ren'i-tē), [key]
—pl. -ties for 2.
1. the state or quality of being serene, calm, or tranquil; sereneness.
2. (usually cap.) a title of honor, respect, or reverence, used in speaking of or to certain members of royalty (usually prec. by his, your, etc.).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.