Made up of multiple parts; composite; not simple. / Not simple, easy, or straightforward; complicated.

A problem. / A network of interconnected systems. / A collection of buildings with a common purpose, such as a university or military base. / An organized cluster of thunderstorms.

(chemistry, intransitive) To form a complex with another substance / (transitive) To complicate.

(chemistry) The relative ability to form a chemical complex

plural of complexability

(chemistry) The formation of a complex

(chemistry) The formation of a complex; complexation

simple past tense and past participle of complex

plural of complexing

plural of complexation