I. ˌtes-tə-ˈmō-nē-əl, -nyəl adjective
Date: 15th century
1. : of, relating to, or constituting testimony
2. : expressive of appreciation or esteem
a testimonial dinner
II. noun
Date: 15th century
1. : evidence , testimony
2.
a. : a statement testifying to benefits received
b. : a character reference : letter of recommendation
3. : an expression of appreciation : tribute