Mega-annum, usually abbreviated as Ma, is a unit of time equal to one million years. It commonly used in geology and paleontology to signify time in the past. For example, 65 Ma indicates 65 million years ago.
This geology article is a stub. You can help Wikipedia by expanding it (http://www.wordiq.com/definition/Mega-annum).
Example Usage of Million
TheEllipseCow: {CEO Blog} Bad Google, Bad Google - I have said it a Million times, Google is slowly taking over the world and all ... http://ow.ly/166O5Q
docstrange: FIFA world cup drawing garners 200 Million viewers. Roughly double the superbowl. Gives some perspective.
jutecht: edbuzz.org ยป 10.5 Million preK-12 Students Will Attend Classes Online by 2014 http://bit.ly/7XmS25 (via @twttimes)
