Modern Greek lemma

μέγιστης

mégistis — “genitive feminine singular of μέγιστος”

genitive feminine singular of μέγιστος (mégistos), the absolute superlative degree of μεγάλος (megálos) (greatest, highest, maximum)

Definitions from English Wiktionary via kaikki.org (wiktextract), licensed CC BY-SA 4.0.