utpādānantarāsthāyi svarūpaṃ yac ca vastunaḥ / taducyate kṣaṇaḥ so 'sti yasya tatkṣsaṇikam matam //
That nature of a thing which does not remain after [its] arising is called a 'kṣaṇa', and that which has this [nature] is considered 'kṣaṇika'.