Definitions

1. adjective

having many different and connected parts; having a complicated structure or organization

“The complex system of gears in the clock was fascinating.”

2. noun

a group of buildings, especially one that is used for a particular purpose, such as a university or a hospital

“The university was a complex of modern buildings with state-of-the-art facilities.”

3. noun

a set of interconnected points or regions, especially in a topological space

“The complex of nodes and edges in the graph was analyzed using a computer algorithm.”

4. verb

to make or become complex; to make something more complicated or difficult to understand

“The problem was complexed by the addition of too many variables.”