What is "airyaman"

In the Avesta, (or ) is both an Avestan language common noun as well as the proper name of a Zoroastrian divinity.

The common noun is a theological and social term literally meaning "member of (the) community or tribe." In a secondary development, the common noun became the proper name of a divinity Airyaman, who is the yazata of health and healing.

In Zoroastrian tradition, Avestan Airyaman is Middle Persian Erman (Ērmān).