point of departure
- 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.
Origin of point of departure
First recorded in 1855–60
Also called departure.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018