Meanings
nounmegaannum (plural megaannums or megaanna)
plural megaannums · plural megaanna
- alternativeAlternative spelling of mega-annum.
Origin
Cite this entry
APA
megaannum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/megaannum
MLA
“megaannum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/megaannum. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “megaannum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/megaannum.
Source: megaannum on Wiktionary, CC BY-SA 4.0.