Referring to the 1,000th anniversary of an event or happening. / Occurring every thousand years. / Occurring at, or relating to, the end or beginning of a millennium.

(demographics, often capitalized) A person from the generation born from around the early 1980s to the mid 1990s; individuals who reached adulthood early in the 3rd millennium, CE

plural of millennial

plural of millennialism

millenarianism

Alternative letter-case form of millennial

Alternative letter-case form of millennial

plural of Millennial

In millennial terms.

(music) A repeated motif of three notes consisting of a fifth, followed by a third, and returning to the fifth, extremely common in pop music of the early 21st century.