IPA: /ˌriːdəˈbɪləti/
KK: /ˈriːdəˌbɪləti/
The quality that makes a text easy to read and understand.
The readability of the article improved after the author simplified the language.
Readability → It is formed from "read" (from Old English *rædan*, meaning to interpret or understand) and "-ability" (from Latin *abilitas*, meaning capability or quality of being). The word "readability" refers to the quality of being able to be read or understood easily.
Think of the ability to 'interpret' ('read') something clearly — that's what 'readability' means.