Synonyms for mega-annum
- noun
Most common
Definitions
- n. 1
Synonym of megayear: a period of 1 million years.
Holonyms: petasecond < giga-annum, gigayear < exasecond
Related words
- Other spellings
- megaannum megannum
Forms
- Plural
- mega-annums → megayears, millionenniums…
By length
- 8 letters
- megayear
- 13 letters
- millionennium