1. a conceptual whole made up of complicated and related parts;
- "the complex of shopping malls, houses, and roads created a new town"
- synonym： composite
2. a compound described in terms of the central atom to which other atoms are bound or coordinated
- synonym： coordination compound
3. (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
4. a whole structure (as a building) made up of interconnected or related structures
- synonym： building complex
1. complicated in structure; consisting of interconnected parts;
- "a complex set of variations based on a simple folk melody"
- "a complex mass of diverse laws and customs"
- antonym： simple
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- Committee on Planetary and Lunar Exploration