One who precedes; one who has preceded another in any state, position, office, etc.; one whom another follows or comes after, in any office or position.
A model or type of machinery or device which precedes the current (or later) one. Usually used to describe an earlier, outdated model.
A vertex having a directed path to another vertex
The person, place, or thing from which something (information, goods, etc.) comes or is acquired.
A reporter's informant.
Source code.
The name of one terminal of a field effect transistor (FET).
Spring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which a stream originates.
To obtain or procure: used especially of a business resource.
To find information about (a quotation)'s source (from which it comes): to find a citation for.