Definition: a term used by later grammarians in connection with such a rule on which another rule depends cf. उपजीव्यादन्तरङ्गाच्व प्रधानं प्रबलम् Pari. Śekh. on Pari. 97, as also M. Bh. on हेतुमति च P. III.1.26. The relationship known as उपजीव्योपजीवकभाव occurs several times in grammar which states the inferiority of the dependent as noticed in the world.