Saha, Meghnad Syllabification: (Sa·ha, Meghnad)Pronunciation: /ˈsäˌhä/Definition of Saha, Meghnad (1894–1956), Indian theoretical physicist. Saha laid the foundations for modern astrophysics. He devised an equation that expressed the relationship between ionization and temperature. Saha, Meghnad in other Oxford dictionaries Definition of Saha, Meghnad in the British & World English dictionary