πλατύτης

ητος, ἡ
A. breadth, width, of the liver, Hp. VM 22; of animals, X. Cyr. 1.4.11.
2. amplitude, ἑρμηνείας D.L. 3.4.
3. breadth of pronunciation, Demetr. Eloc. 177.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project