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 प्रास्थानिक
प्रास्थानिकprāsthānikaa.(-की f.)
(-कीFeminine)
Relating to or proper at the time of departure; प्रास्थानिकं स्वस्त्ययनं प्रयुज्य R.2.7.