noun
Word Origin mid 17th century: based on Latin vale ‘goodbye’ + dicere ‘to say’, on the pattern of benediction.
Scrabble Points: 17
Powered by Oxford Dictionaries
More definitions, origin and scrabble points
Complementary close
A valediction, or complimentary close in American English, is an expression used to say farewell, especially a word or phrase used to end a letter or message, or a speech made at a farewell. Wikipedia