cross-in-square church
Type of church in which four barrel-vaulted bays form a greek cross; the central square of their intersection is domed. The cross is inscribed into the square ground plan by means of four corner bays.

dosseret
Architectural member of marble with the form of inverted truncated pyramid, that was placed between the capital and arc.

liturgical inscriptions
Inscriptions including excerpts from liturgical books, such as Pentekostarion, the Euhologion (Prayer book) etc.

pillar
Pier of square or rectangular cross-section.

simurg
Mythological animal with head of dog, legs of lion, with feathers and big tail that symbolizes in the Sassanidian art a beneficial for the seeding form.