Definition: the application of a grammatical rule as a necessity to arrive at some forms in literature especially in the Vedic Literature as also in the works of standard writers, which cannot be explained easily by the regular application of the stated rules; cf. सुप्तिङुपग्रहलिदनराणां कालहलच्स्वरकर्तृयङां च । व्यत्ययमिच्छति शास्त्रकृदेषां सोपि च सिध्यति बाहुलकेन M.Bh. on P. III. 1.85; also cf. बाहुलकं प्रकृतेस्तनुदृष्टेः प्रायसमुच्चयनादपि तेषाम् । कार्यसशेषविधेश्च तदुक्तं नैगमरूढिभवं हि सुसाधु M.Bh. on P. III.3.1. In many sutras, Panini has put the word बहुलम् to arrive at such forms; e.g see P.II.1.32,57; II.3.62. II.4.39,73,76,84 etc.