breadth 
/ˈbrɛtθ/ noun
/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.
▪ 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
▪ I admire his breadth of knowledge/experience/achievement. = I admire the breadth of his knowledge/experience/achievement.
the length and breadth of — see length
