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mega-annum. In DICTIOUS you will not only get to know all the dictionary meanings for the word
mega-annum, but we will also tell you about its etymology, its characteristics and you will know how to say
mega-annum in singular and plural. Everything you need to know about the word
mega-annum you have here. The definition of the word
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English
Etymology
From mega- + annum.
Pronunciation
Noun
mega-annum (plural mega-annums or mega-anna)
- Synonym of megayear: a period of 1 million years.