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 ऐष्टिक
ऐष्टिकaiṣṭikaa.(-की f.) [इष्टि-ठक्]
(-कीFeminine) इष्टि-ठक्
Sacrificial, ceremonial.
Treating of इष्टि or sacrifice (as a work).
Derived forms and compounds
-पूर्तिकपौर्तिकAdjective belonging to इष्टापूर्त (belonging to sacrifices or charitable works); दानधर्मं निषेवेत नित्यमैष्टिक- पौर्तिकम् Ms.4.227.