Definition: substitute for झि ending of the third pers.plu., in the perfect tense and in the present tense in the case of the roots विद् and ब्रू, e.g. विदुः and आहुः cf. P. III.4.82-84; (2) substitute जुस् (उस्) for झि in the potential and the benedictive moods, as also after the aorist sign स् and after roots of the third conjugation, roots ending in आ and the root विद्, e. g. पचेयुः भूयासुः अकार्षुः, अबिभयुः अदुः, अविदुः, etc.; cf. Kāś. on III.4.108-112.