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.
Entry अनुवत्सर
अनुवत्सरanuvatsaraA year.
[अनुकूलो वत्सरो दानादिविशेषाय]
A year.
The 4th year in the 5 years' cycle; or the 5th of 5 cycles of 12 years in the Bṛihaspati cycle. वायुमेव तदनु- वत्सरमाप्नोति T. Br.1.4.1.