salutation
nounUK /ˌsæl.juˈteɪ.ʃən/
US /ˌsæl.jəˈteɪ.ʃən/
A salutation is a polite word or sign you use to greet someone.
He began his letter with the salutation "Dear Grandma."
OTHER MEANINGS
2. The words you say or write at the start of a letter or message.
The salutation "Dear Sir" is common in formal letters.
3. A gesture such as a nod, bow, or wave used to greet someone.
She gave a friendly salutation with a wave of her hand.
4. The act of greeting or welcoming a person.
The soldiers stood at attention for the general's salutation.