1. An elaborate entertainment spectacle of swimmers and divers, often performing in unison to the accompaniment of music: The town decided to put on an aquatic exhibition, or aquacade, sometime during the summer months and hoped that it would be a big attraction for many people to come.
2. Etymology: from Latin aqua- + -cade, from Latin cavalcade.

Literally, "a procession on horseback", in the twentieth century, -cade came to be regarded as a suffix and taken to form such words as, motorcade, aquacade, etc.