1. (

• complex ,
• composite

) a conceptual whole made up of complicated and related parts; "the complex of shopping malls, houses, and roads created a new town" ;

2. (

• complex ,
• coordination_compound

) a compound described in terms of the central atom to which other atoms are bound or coordinated ;

3. (

• complex

) (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior ;

4. (

• building_complex ,
• complex

) a whole structure (as a building) made up of interconnected or related structures ;

1. (

• complex

) 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" ;

2. (

• complicated ,
• complex ,

) difficult to analyze or understand; "a complicated problem"; "complicated Middle East politics"; "he's more complex than he seems on the surface" ;