decamillennium

D2E1C3A1M3I1L1L1E1N1N1I1U1M3

noun

A period of time consisting of ten thousand years.

Scrabble 21

Meanings

noundecamillennium (plural decamillennia or decamillenniums)

plural decamillennia · plural decamillenniums · alternative decimillennium

  1. rareA period of time consisting of ten 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.

    1882, Nelson Loverin, Loverin’s Chart of Time, Centograph and Slate, page 37
    5 more examples

    There is most assuredly an occult “chronological system in Hebrew Scripture”—the Kabala being its warrant; there is in it “a system of weeks”—which is based on the archaic Indian system, which may still be found in the old Jyotisha.* And there are in it cycles of “the week of days,” of the “week of months,” of years, of centuries, and even of millenniums, decamillenniums, and more, or “the week of years of years.”†

    1888, Helena Blavatsky, The Secret Doctrine: Anthropogenesis, pages 623–624

    That this bare room, in spite of its barrenness, was a Catholic church, was attested by the high altar which had preserved its form unchanged through the decamillennia and was crowned by a tall, gold, gleaming monstrance.

    1946, Gustave O. Arlt, transl., Star of the Unborn, Viking Press, translation of original by Werfel, Franz, page 225

    These suns are selected by the Creator Sun and are commissioned by Gabriel as the most high of the constellations for service during one decamillennium, which is 10,000 of our standard years. / In their time it is 10,000 years precisely. But because we are placed farther out of the infinite light, and our vibrations are much slower here, there is a time-drag factor of about 5. […] And each of the most high rulers, in accordance with the present policy, has a period of service on the headquarters of a constellation for 3 decamillenniums, which in our time is 150,000 years.

    1965, Wallace C. Halsey, Cosmic End-Time Secrets, Futura Press, page 78

    A fundamental question in any analysis of volcanic activity is the absence or presence of memory effects, and if present, their kind and extent. The time scales involved are also basic: some volcanic phenomena take place within hours or even shorter intervals, others need millennia or even decamillennia to produce observable effects.

    1972, International Geological Congress: Abstracts, volume 24, page 519

    It is this present time, the twelve thousand or so years since the ice age and the twelve thousand or so years yet to come, that is our little territory. We will be judged or judge ourselves by how we have lived with each other and the world during these two decamillennia.

    1990, Gary Snyder, The Practice of the Wild, Counterpoint, published 2010, →ISBN, page 190

Synonyms & antonyms

Also see

Origin

Cite this entry
APA

decamillennium. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/decamillennium

MLA

“decamillennium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/decamillennium. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “decamillennium,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/decamillennium.

Source: decamillennium on Wiktionary, CC BY-SA 4.0.