The word 行程 is formed by combining two meaningful characters: 行, which means "to go", "to travel", or "to move", and 程, which means "journey", "distance", or "leg of a trip". When placed together, they create a compound word where the first character describes the action and the second defines its scope or path. Conceptually, it merges the idea of "moving" with the idea of a "prescribed course", resulting in the integrated meaning of a "travel itinerary", "route", or "schedule of movement" from one point to another.