sandigdhe vastuni pramāṇena tattva-parīkṣā vicāraḥ
sandigdhe vastuni pramāṇena tattva-parīkṣā vicāraḥ |
(Goyīcandraḥ; cited in Śabda-kalpa-druma)
“Examination of the true nature (tattva) of an uncertain object by valid means of acquiring certain knowledge (pramāṇa) is [called] vicāra.”