ETYM Latin intellectus, from intelligere, intellectum, to understand: cf. intellect. Related to Intelligent.
1. The part or faculty of the human mind by which it knows.
2. The power to judge and comprehend.
3. The thinking faculty; understanding.
Aspect of the mind concerned with cognitive processes, such as remembering, imagining, conceptualizing, reasoning, understanding, and judging. The term is also used to refer to these rational, or higher, thought processes.