A type of empirical Avagraha (sensation);
to have cognizance of the object free from doubt, e.g.- to know only on the basis of touch that 'this is definitely a woman'.
niścitaṃ sakalasaṃśayādidoṣarahitamiti, yathā tameva yoṣidādisparśamavagṛhṇāt jñānaṃ yoṣita eva.
(TaBhā 1.16 Vṛ)
...nissaṃkitaṃ hota'saṃdiddhaṃ...
(VyaBhā 4108)