Definition: believed to be Katyayana to whom the whole bulk of the Varttikas quoted in the Mahabhasya is attributed by later grammarians. Patafijali gives the word वार्तिककार in four places only (in the Mahabhasya on P.I.1.34, III.1.44: III.2.118 and VII.1.1) out of which his statement स्यादिविधिः पुरान्तः यद्यविशेषणं भवति किं वार्तिककारः प्रातिषेधेनं करोति in explanation of the Slokavarttika स्यादिविधिः...इति हुवता कात्यायनेनेहृ, shows that Patanjali gives कात्यायन as the Varttikakara (of Varttikas in small prose statements) and the Slokavarttika is not composed by Katyayana. As assertions similar to those made by other writers are quoted with the names of their authors (भारद्वाजीयाः, सौनागाः, कोष्ट्रियाः etc.) in the Mahabhasya, it is evident that the Varttikas quoted in the Mahabhasya(even excluding the Slokavarttikas) did not all belong to Katyayana. For details see pp. 193-200, Vol. VII, Vyakarana Mahabhasya, D. E. Society's Edition.