From Wiktionary, the free dictionary
vor- + Feld.
Vorfeld n (strong, genitive Vorfeldes or Vorfelds, plural Vorfelder)
- run-up (period of time just before an important event)
- apron (paved area of an airport)
- “Vorfeld” in Digitales Wörterbuch der deutschen Sprache
- “Vorfeld” in Uni Leipzig: Wortschatz-Lexikon
- “Vorfeld” in Duden online