Where something came from.
Cards with a source?
your a loser buttface
The definition of biography source is the place where the life story of a person is derived from. This shows where the facts have been obtained from.
primary source
source that will run out
the firsthand record
he Source of a river is the start of the river. It's often found in the mountains.
By definition of a historical primary source (by someone with direct knowledge from the time), a original political cartoon is a primary source. By definition of an English primary source (it is printed), it is a primary source. By definition of the final form of primary sources (see definition of primary source on www.answer.com), it is based on someone's interpretation of the time and is thus a secondary source.
Having the source code open for anyone to edit or modify for free.
An electrical power source that has no liquid in it.
ogden city, utah
The invention of measuring tools is prehistoric, therefore by definition there won't be a primary source.