praṇīyeta lakṣaṇam, api tu yathāvasthitam eva vastusvarūpamanūdya prasiddhasvabhāvaviśeṣapratipipādayiṣayā lakṣaṇaṃ praṇayanti tadvidaḥ
[one could] frame a definition, but rather the experts frame a definition by following exactly the true nature of the thing as it exists [and] with the desire to establish its well-known particular characteristic