megaevent

noun

megaevent

noun

Etymology From mega- + event.

1

A very large-scale event.

In terms of viewing audience and revenue, the FIFA World Cup is the largest sport megaevent of its kind[…]2012, John Nauright, Charles Parrish, Sports Around the World: History, Culture, and Practice, page 127:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.