Declension table of ?dhanvantara

Neuter	Singular	Dual	Plural
Nominative	dhanvantaram	dhanvantare	dhanvantarāṇi
Vocative	dhanvantara	dhanvantare	dhanvantarāṇi
Accusative	dhanvantaram	dhanvantare	dhanvantarāṇi
Instrumental	dhanvantareṇa	dhanvantarābhyām	dhanvantaraiḥ
Dative	dhanvantarāya	dhanvantarābhyām	dhanvantarebhyaḥ
Ablative	dhanvantarāt	dhanvantarābhyām	dhanvantarebhyaḥ
Genitive	dhanvantarasya	dhanvantarayoḥ	dhanvantarāṇām
Locative	dhanvantare	dhanvantarayoḥ	dhanvantareṣu

Compound dhanvantara -

Adverb -dhanvantaram -dhanvantarāt