प्रनप्तृpranaptṛm.The son of a grandson, a great-grand son.
The son of a grandson, a great-grand son.
कोशःDictionaries
V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.