breadth
 /ˈbrɛtθ/  noun   [  noncount  ]
  1 : the distance from one side to the other side of something : width
   We measured the height, breadth, and depth of each piece of furniture.
   Its breadth is five feet. [=(more commonly) it's five feet wide]
  — see also hair's breadth
  2 : the quality of including many things : the wide scope or range of something
   I admire his breadth of knowledge/experience/achievement. = I admire the breadth of his knowledge/experience/achievement.
  the length and breadth of — see length