Declension table of ?viśana

Neuter	Singular	Dual	Plural
Nominative	viśanam	viśane	viśanāni
Vocative	viśana	viśane	viśanāni
Accusative	viśanam	viśane	viśanāni
Instrumental	viśanena	viśanābhyām	viśanaiḥ
Dative	viśanāya	viśanābhyām	viśanebhyaḥ
Ablative	viśanāt	viśanābhyām	viśanebhyaḥ
Genitive	viśanasya	viśanayoḥ	viśanānām
Locative	viśane	viśanayoḥ	viśaneṣu

Compound viśana -

Adverb -viśanam -viśanāt