Originally Posted by
CaptRobPhD
Segment universally = one takeoff and one landing. So far, no 1/2 segments logged

No, the industry definition isn't related to takeoff/landings. Rather, that would be the definition of legs.
If a flight operates AAA-BBB-CCC-DDD, it has 6 segments:
1. AAA-BBB
2. BBB-CCC
3. CCC-DDD
4. AAA-CCC
5. AAA-DDD
6. BBB-DDD
1, 2 and 3 would also be considered legs of the various segments.