point_of_departure
1. [ noun ] a place from which an enterprise or expedition is launched
Synonyms: jumping-off_point jumping-off_place
Examples:

"one day when I was at a suitable jumping-off place I decided to see if I could find him" "my point of departure was San Francisco"

Related terms: beginning
2. [ noun ] a beginning from which an enterprise is launched
Synonyms: springboard jumping-off_point
Examples:

"he uses other people's ideas as a springboard for his own" "reality provides the jumping-off point for his illusions" "the point of departure of international comparison cannot be an institution but mu

Related terms: beginning
Similar spelling:   point_of_reference
  point_of_no_return