The source of, or reason for, an event or action; that which produces or effects a result.
Sufficient reason for a state, as of emotion.
A goal, aim or principle, especially one which transcends purely selfish ends.
A suit or action in court; any legal process by which a party endeavors to obtain his claim, or what he regards as his right; case; ground of action.
To actively produce as a result, by means of force or authority.
To set off an event or action.
The beginning of something.
The proximal end of attachment of a muscle to a bone that will not be moved by the action of that muscle.
An arbitrary point on Earth's surface, chosen as the zero for a system of coordinates.
The source of a river, information, goods, etc.
Ancestry.
The point at which the axes of a coordinate system intersect.