visarga विसर्ग

Definition: aspiration, leaving of the breath generally at the completion of the utterance of a word when there is a pause; the term विसर्जनीय was in use in ancient times. Although not mentioned in his alphabet by Pāṇini, this Phonetic element, visarga, is looked upon as a letter; it is mentioned as one of the letters in the Śikṣā and the Prātiśākhya works and Patañjali has advised its inclusion in the alphabet. As visarga cannot be found in use independently of another letter (which is any vowel after which it occurs) it is called अयोगवाह.

Dictionary: Abhyankar
Literary Sources: