Megaanum, kiloannum, annum - Textkit Greek and Latin Forums
...In geology I frequently deal with SI units and am often presented with terms like Ma : "megaanum" = one million years, or ka : "kiloannum" = one thousand years, et cetera. Wikipedia defines the SI unit annum as being the accusative singular of Latin annus, which of course you all know....
https://www.textkit.com/greek-latin-forum/viewtopic.php?t=8051&p=64709
Megaanum, kiloannum, annum - Learning Latin - Textkit Greek and Latin
...Salvete omnes! In geology I frequently deal with SI units and am often presented with terms like Ma : ?megaanum? = one million years, or ka : ?kiloannum? = one thousand years, et cetera. Wikipedia defines the SI unit annum as being the accusative singular of Latin annus, which of course you all know. We will leave the repugnance of the formation of this term and its chimaeric ......
https://www.textkit.com/t/megaanum-kiloannum-annum/7387