-plex suffix¹. [plɛks]
[Latin, from plicare to fold. Cf. -FOLD.]
Forming adjectives from cardinal numerals (and adjectives meaning 'many') with the senses 'multiplied by', 'having so many parts or elements', as simplex, duplex, multiplex, etc., and parallel nouns (esp. US) with the senses 'a building or dwelling divided into a specified number of floors, residences, etc.', as duplex, triplex, etc.

[TahlilGaran] English Dictionary ▲

-plex suffix². [plɛks]
[from COMPLEX noun.]
Forming nouns with the sense 'an integrated industrial facility or other organization characterized by (the expanded form of) the initial element', as metroplex, nuplex, wasteplex, etc.

[TahlilGaran] English Dictionary ▲