Definition, synonyms and related words
A multituberculate.
"After partner opened 2♦, I knew we were playing multi and immediately checked my hand to decide whether to raise or pass."
Neolamprologus multifasciatus (small shell-dwelling cichlid endemic to Lake Tanganyika, popular as aquarium fish)
A contract bridge convention whereby the opening bid of 2♦ shows several possible types of hands.
"The multi was turned on to provide heat for the cold room."
Usage: Do not use "multi" as a standalone noun in general conversation; it is strictly a technical term within contract bridge describing a specific bidding convention. Outside of that context, it functions only as a prefix meaning "many" or "multiple."
Multi is a clipped form of the word multistan, which refers to a fan who supports multiple celebrities or fictional characters. It originally emerged from internet slang culture rather than being derived from an ancient language root.