Is Diminution a Real Word?

the act, fact, or process of diminishing; lessening; reduction.

What's the meaning of the word diminution?

: the act, process, or an instance of becoming gradually less (as in size or importance) : the act, process, or an instance of diminishing : decrease a diminution in value.

What is the verb for diminution?

diminutize. To put (a word, name) in a diminutive form. To make (someone or something) appear smaller (often in a figurative sense).