"So all Viṣṇu expansions, they are in the spiritual world, and they all of them reside there. But when they come into this material world, it is called incarnation." Actually, avatāra... This Sanskrit name is avatāra. Avatāra means who comes down from the spiritual world. Avatāri. Avatāri means descends. Descends. They are not born of this material energy. They descend from the spiritual world.
Avatari means
Lectures
Sri Caitanya-caritamrta Lectures
Avatāri means descends. Descends. They are not born of this material energy. They descend from the spiritual world.
Lecture on CC Madhya-lila 20.255-281 -- New York, December 17, 1966: