Ma

Ma
   1. see megayear
   2. see Mach
   3. a symbol for one million years, often used in astronomy and geology. The "a" stands for the Latin annum.

Dictionary of units of measurement. 2015.

Игры ⚽ Нужно решить контрольную?

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”