a.vi.hu is the proper name of Aaron's son, named with Nadab, Eleazar, and Ithamar and associated with the unauthorized fire episode.

The term is consistently a proper name for one of Aaron's sons, listed alongside Nadab, Eleazar, and Ithamar; the occurrences also identify him among those summoned to ascend and as one who died after presenting unauthorized fire.

1. Proper name of Aaron's son · dominant

   The form is tagged Noun · Proper in every occurrence. In Exodus 6:23 the APB renders Aaron's sons as “Nadab, Abihu, Eleazar, and Ithamar”; Exodus 28:1 places the same named son among those brought near so that they may minister. In Leviticus 10:1 the APB renders Nadab and Abihu as Aaron's sons who presented strange fire, while Numbers 26:61 states that they died when they offered unauthorized fire before the LORD.

   Exodus 6:23Exodus 28:1Leviticus 10:1Numbers 26:61Numbers 3:21 Chronicles 24:2

In the Anselm Project Bible: Across the supplied verses, the APB presents the proper name as “Abihu,” chiefly in lists of Aaron's sons and in accounts involving Nadab and Abihu. These renderings identify the named figure from the verse context rather than isolate every contribution of the Hebrew form.