plex

noun4

1. •
   (Canada) 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
2. •
   Clipping of multiplex.
3. •
   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
4. •
   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