Amurdad is the Middle Persian form of Ameretat, a Zoroastrian divinity representing immortality. In the Zoroastrian calendar, the 11th day of each month is named for her, and during the Sassanid era (224–651 CE), the name was commonly used in Middle Persian as Amurdad. This form influenced the later New Persian variants Amordad and Mordad. Etymology and Linguistic Roots The name descends from an Avestan term meaning “immortality,” which is grammatically feminine. Deepened Indo-Iranian roots reveal a direct lineage to the concept of amṛtatva in Vedic Sanskrit, reflecting a shared heritage of death-defying ideals across ancient Iranian and Indian cultures. In Middle Persian, the full form Amurdad was used; later New Persian contracted it to Mordad or retained it as Amordad. Religious Role in Zoroastrianism Within Zoroastrian theology, Amurdad (as Ameretat) is one of the seven Amesha Spenta—the “Holy Immortals” who emanate from the supreme god Ahura Mazda. She embodies long life on earth and eternity in the hereafter, and is associated with plants and herbal medicine. Often paired with Haurvatat (the divinity of health and wholeness), she appears alongside her in scripture as a complementary guardian of well-being. In the Avesta, the fourth month of the Zoroastrian calendar is named Haurvatat, and the fifth month becomes Ameretat—a pair that signifies the union of health and immortality. Meaning: “immortality”Origin: Avestan, via Middle PersianType: Religious/Zoroastrian divine name used as a given nameUsage: Persian (Iran) and Zoroastrian communities in India (India)