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a combining form meaning “having parts or units” of the number specified by the initial element, occurring originally in loanwords from Latin (duplex; quadruplex); recent English coinages ending in -plex, especially denoting structures with a given number of dwelling units, are probably in part new formations with this suffix and in part based on the noun complex: fourplex; eightplex; Cineplex; Metroplex.
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Origin of -plex
<Latin -plex, -plic- (akin to plicāre to fold, bend, plectere to plait, braid; see -fold) + -s nominative singular ending
Words nearby -plex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use -plex in a sentence
Yup, it was right there, within that eight-plex apartment building, where the Ebola outbreak in Dallas refused to die.