智商 (zhì shāng) is the Chinese term for 'IQ' or 'intelligence quotient'—a standardized measure of human cognitive ability, typically derived from formal psychological tests. The character 智 means 'wisdom' or 'intelligence', while 商 literally means 'quotient' or 'ratio', reflecting the mathematical origin of IQ as a score calculated by dividing mental age by chronological age and multiplying by 100.

This term is widely used in educational, clinical, and everyday contexts to discuss intellectual capacity, learning potential, or cognitive development. While it carries scientific connotations, in informal speech it can sometimes be used loosely or even humorously—for example, to comment on someone’s decision-making ('Your IQ seems low right now!'). However, using it critically or judgmentally toward others may sound insensitive, so context and tone matter greatly.