IPA: /mɪˈlɛn.i.əl/
KK: /mɪˈlɛn.i.əl/
Relating to a period of one thousand years, often used to describe events or trends that occur at the turn of a millennium.
The millennial celebration attracted many visitors from around the world.
Millennial → It is formed from "mille" (from Latin, meaning thousand) and "-ennial" (from Latin "annus", meaning year). The term refers to the generation that reached adulthood around the year 2000, marking a thousand years since the start of the Common Era.
Think of 'mille' meaning thousand and 'annus' meaning year to remember that 'millennial' refers to the generation associated with the turn of the millennium.