plex

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.Examples: "Most new housing has taken the form of single-family dwellings, not plexes, and levels of home ownership have risen steadily."; "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."Canada

2. (computing) A designated portion of a disk, usually set up to mirror some of the contents.Examples: "Striped volumes of mirrored plexes can survive failure of up to half of their disks."

3. (computing) A tree-like structure in which each child can have multiple parents.Examples: "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."