point of departure
noun
Nautical.
the precise location of a vessel, established in order to set a course, especially in beginning a voyage in open water.
a place to begin, as in a discussion, argument, etc.
Also called
departure.
Origin of point of departure
First recorded in 1855–60
Words nearby point of departure
point in time,
point lace,
point man,
point mutation,
point of articulation,
point of departure,
point of fixation,
point of honor,
point of honour,
point of inflection,
point of no return