anusvara
अनुस्वार anusvaraThe nasal resonance ('m' hum) written as a dot (bindu) that closes a syllable, especially a bija; read in Tantra as the union of Shiva and Shakti.
Where this term appears
- Bija: The Seed-Syllables Treatise
And there is a closing resonance, the nasal hum written as a dot above the line, the anusvara or bindu .