The property that makes legible or easily readable.(noun)
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Use "legibility" in a sentence
"And looking at the handwriting, the legibility is a direct correlation to the speed of the song at the time."
"I don't care a whit about photos, graphics or other layout issues (of course, legibility is a plus)."
"In Poe's story, the cryptic assertion that a particular book does not allow itself to be read becomes part of a larger structure of self-reference in which legibility is no longer a factor of clarity or obscurity."