chil·​i·​ad | \ ˈki-lē-ˌad How to pronounce chiliad (audio) , -əd \

Definition of chiliad

1 : a group of 1000

What is the difference between a chiliad and a millennium?

What's the difference between a chiliad and a millennium? Not much: both words refer to a period of 1000 years. While millennium is more widely used, chiliad is actually older, first appearing in the late 1500s (millennium didn’t make its way into written English until the following century). Not surprisingly, both words trace back to roots that mean thousand. Millennium comes from the Latin mille, and chiliad is a descendent of the Greek chilioi.

First Known Use of chiliad

1598, in the meaning defined at sense 1

History and Etymology for chiliad

Late Latin chiliad-, chilias, from Greek, from chilioi thousand

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The first known use of chiliad was in 1598

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Cite this Entry

“Chiliad.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2021.

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