Definition of sight-seeing:
(adj) :
relating to or having the purpose of seeing points of interest
"they went on a sightseeing trip around the area."
(n) :
the practice of going out looking at things;
tourism
"sightseeing is a frequent reason to visit San Francisco."
(v) :
Touring; visiting places for the purpose of seeing them
"would you like to go sightseeing with me someday?"
Definition of sight-seeing:
(adj) :
relating to or having the purpose of seeing points of interest
"they went on a sightseeing trip around the area."
(n) :
the practice of going out looking at things;
tourism
"sightseeing is a frequent reason to visit San Francisco."
(v) :
Touring; visiting places for the purpose of seeing them
"would you like to go sightseeing with me someday?"