Meaning of “breadth” - Learner’s Dictionary

breadth

noun [ U, no plural ] uk us /bretθ/

the distance from one side of something to the other side:

The swimming pool has a breadth of 10 metres and a length of 50 metres.
sb's breadth of experience/knowledge/interest, etc

the great number of different things that someone has done, knows, is interested in, etc

→ See also the length and breadth of sth

(Definition of “breadth” from the Cambridge Learner’s Dictionary © Cambridge University Press)