लक्षणमसाधारणो धर्मः ।
lakṣaṇam asādhāraṇo dharmaḥ |
(Artha-ratnālpa-dīpikā on Bhakti-rasāmṛta-sindhu: 1.1.10)
“A lakṣaṇa is an exceptional characteristic.”
Commentary
A lakṣaṇa is a characteristic of an object that is not possessed by any other object and thus serves to distinguish an object from all other objects.