Rialto most commonly means a marketplace or a theater district, and originally refers to a historic commercial area and bridge in Venice, Italy.

Core meaning

  • In modern English, “rialto” can mean:
    • A marketplace or trading area.
* A theater or entertainment district, especially in a big city.

Origin and Venice connection

  • The word comes from the Rialto , an island and historic commercial center in Venice, famous for its market.
  • It is also associated with the Rialto Bridge over the Grand Canal, one of Venice’s best-known landmarks.

Other uses

  • Rialto is also the proper name of:
    • A commercial center in Venice itself.
* A city named Rialto in southwestern California, near Los Angeles.

TL;DR: When someone asks “what does rialto mean,” they are usually referring to a marketplace or a busy theater/commercial district, a meaning that comes from the famous Rialto market area and bridge in Venice.

Information gathered from public forums or data available on the internet and portrayed here.