Also agerasy. [Gr. ἀγηρασία eternal youth; f. ἀ priv. + γῆρας old age.] The quality of not growing old; non-appearance of the signs of age; a green old age.
1706. Phillips, Agerasia.
1721. Bailey, Agerasy.
1775. Ash, Ageratia.
1863. Grindon, Life, vi. (1873), 82. Agerasia belongs only to the soul: this alone lives in perpetuity of youth.