point-of-departure

(n) a place from which an enterprise or expedition is launched
- 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
jumping-off place,
(n) a beginning from which an enterprise is launched
- 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 must be the function it carries out
jumping-off point, springboard,

jumping-off place jumping-off point springboard