Noun

• S: (n) multiplex (communicates two or more signals over a common channel)
• S: (n) multiplex (a movie theater than has several different auditoriums in the same building)
• direct hypernym / inherited hypernym / sister term

Adjective

• S: (adj) manifold, multiplex (many and varied; having many features or forms) "manifold reasons"; "our manifold failings"; "manifold intelligence"; "the multiplex opportunities in high technology"
• S: (adj) multiplex (having many parts or aspects) "the multiplex problem of drug abuse"