Science of prognostication- A branch of learning, which prognosticate the auspicious-inauspicious events, profit-loss etc. pertaining to past, present and future, on the basis of voice (svara), lakṣaṇa (lucky or auspicious marks on the body) etc... E.g., -Aṅganimitta (Nimitta based on body- marks), Svaranimitta (Nimitta based on voice) etc...
aṃgaṃ saro lakkhaṇaṃ ca vaṃjaṇaṃ suviṇo tahā.
chiṇṇa bhommaṃ'talikkhāe emee aṭṭha āhiyā... ee mahānimittā u aṭṭha saṃparikittiyā. eehiṃ bhāvānajjamti tītā'nāgaya-saṃpayā... iṃdiehiṃdiyatthehiṃ, samādhāṇaṃ ca appaṇo. ṇāṇaṃ pavattae jamhā, ṇimittaṃ teṇa āhiyaṃ...
(Aṃvi 1. 2, 3, 13)
See - Mahānimittajñatā.