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in the PONS Dictionary

I. complex [ˈkɒmpleks, Am kɑ:mˈpleks] ADJ

complex

II. complex [ˈkɒmpleks, Am ˈkɑ:m-] N

complex
a complex about sth
a persecution complex
OpenDict entry

complex N

spin-free complex CHEM
molecular complex
molecular complex

inferiority complex N

inferiority complex

persecution complex N no pl PSYCH

persecution complex