n. 1. One who, or that which, modifies. Hume. [ 1913 Webster ]
2. (Gram.) A word or phrase that modifies another word, phrase, or sentence, usually by limiting the scope or restricting the meaning of the sentence element modified. [ PJC ]
The doctor suggested that if he can pair up with another student, it will help to modify his behavior and he won't feel like making trouble all the time
Your son's attention deficit disorder can be modified through group interaction help him find some children to pair up with him or arrange a student to be his friend
[ちょうおんぷ, chouonpu] (n) katakana-hiragana prolonged sound mark; macron (indicating a long vowel); circumflex (indicating a long vowel); modifier letter triangular colon (IPA diacritical)