/seuh lem"ni tee/ , n. , pl. solemnities .
1. the state or character of being solemn; earnestness; gravity; impressiveness: the solemnity of a state funeral.
2. Often, solemnities . a solemn observance, ceremonial proceeding, or special formality: the solemnities of Easter.
3. Law. a formality that renders an act or document valid.
[ 1250-1300; ME solempnete sollemnitas, equiv. to sollemnis SOLEMN + -itas- -ITY ]