Definition of range:
(n) :
line or series of mountains; large fuel-burning stove
"we could see the ship at a range of five miles."
(v) :
(followed by over) To travel over (an area, etc) with a particular purpose; (mathematics, computing; followed by over) Of a variable, to be able to take any of the values in a specified range
"the variable x ranges over all
real values from 0 to 10."