Εννοια

• Noun

  1. The person, place, or thing from which something (information, goods, etc.) comes or is acquired.
  2. Spring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which a stream originates.
  3. A reporter's informant.
  4. Source code.
  5. The name of one terminal of a field effect transistor (FET).
  6. A node in a directed graph whose edges all go out from it; one with no entering edges.
  7. The domain of a function; the object which a morphism points from.

• Verb