- adjective belonging to him
- acronym forHealth Information Service (written as HIS)
Origin & History of “his”
His originated as the standard genitive form of the masculine personal pronoun he, with the genitive ending -s – what in modern English would be expressed as of him. But comparatively early in the Old English period it began to replace the ancestral third person possessive adjective sīn (a relative of modern German sein ‘his’), and by the year 1000 it was also being used as a possessive pronoun, as in ‘It’s his’.