plex

Noun

1. A building, such as a duplex or triplex, with a number of apartments (typically two to four) that all open directly to the outside.
   • Most new housing has taken the form of single-family dwellings, not plexes, and levels of home ownership have risen steadily. - 2001, Thomas F. McIlwraith, Edward K. Muller, North America: The Historical Geography of a...
   • English-style terraced houses or the cheaper type of Montreal plexes that opened directly onto the street made such a way of life possible, but just barely. - 2004, Richard Harris, Creeping Conformity: How Canada Became...
2. A designated portion of a disk, usually set up to mirror some of the contents.
   • Striped volumes of mirrored plexes can survive failure of up to half of their disks. - 2002, Paul Massiglia, Highly Available Storage for Windows Servers, page 60:
3. A tree-like structure in which each child can have multiple parents.
   • If a child in a data relationship has more than one parent, the relationship cannot be described as a tree or hierarchical structure. Instead it is described as a ... plex structure. - 1975, James Martin, Computer...
4. Clipping of multiplex.