decamillennium
decamillennium · decamillennia · decamillenniums
A period of time consisting of ten thousand yearsA period of time consisting of ten thousand years.
Meaning
1 senses(rare)A period of time consisting of ten thousand years.
Origin
From deca- + millennium.From deca- + millennium.
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Forms
plural: decamillennia / decamillenniumsWord family
2 related wordsLessons for this word
1 lessons- A1Plural nouns — Because its plural is irregular