लक्षशस्lakṣaśasind.By hundreds of thousands, i. e. in large numbers.
By hundreds of thousands, id est, that is in large numbers.
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.