The aer (literally the "air"; modern Greek: Αέρας; Slavonic: Воздухъ, Vózdukh) is a veil used for covering the paten and chalice during and after the Eucharist. The priest shakes the aer over the chalice when the creed is read; this symbolizes the descent of the Holy Spirit. The aer also represents the shroud of Christ.
- Aer from A Dictionary of Orthodox Terminology by Fotios K. Litsas, Ph.D. (Orthodox Research Institute)
- Why does the priest wave the aer over the Sacred Gifts during the Liturgy? by Fr. Michael Monos, voithou of Annunciation Greek Orthodox Church in Akron, OH
- Aër from the Catholic Encyclopedia