centimillennium

Etymology

From centi- + millennium.

Why this word is great

CENTIMILLENNIUM — [Noun] A period of one hundred thousand years, derived from the Latin centi- ("hundred") and millennium ("thousand years"). Unlike a millennium, which marks a precise span of one thousand years, or an eon, which stretches vaguely across geological deep time, the centimillennium is a deliberate measure of vast but calculable duration. It is the slow creep of continental drift, the lifespan of a mountain range, or the interval between supervolcanic eruptions—a span so immense that human civilization, with its fleeting empires and forgotten languages, barely registers as a flicker within its expanse.

noun

  1. A period of time consisting of one hundred thousand years.“A Millennium consists of one thousand years. / A Decamillennium is ten thousand years. /[…]/ A Centimillennium embraces a period of one hundred thousand years.”