Definitions

1. prefix

bad, abnormal, or diseased; used in combination with other words to form compound words

“dyslexia (a reading disorder), dysentery (a severe intestinal infection)”

2. noun

a prefix used in medical terms to indicate disease or abnormality

“dysfunction (a condition in which a system or process does not function properly)”

3. verb

to make or become worse; to deteriorate or decline

“dysfunctioned under pressure”