'baritonal' originates from English, specifically from the word 'baritone' combined with the suffix '-al', where '-al' meant 'pertaining to'.

'baritonal' developed from the English noun 'baritone', which itself came from Italian 'baritono', ultimately from Greek 'βαρύτονος' ('barýtonos'); the modern adjective 'baritonal' was formed in English by adding the suffix '-al' to 'baritone'.

Initially the Greek root conveyed 'deep-voiced' (from 'barýtonos'), but over time the term evolved into its current adjectival use meaning 'relating to or characteristic of a baritone voice'.