Definitions for iconostasisˌaɪ kəˈnɒs tə sɪs; -ˌsiz
Random House Webster's College Dictionary
i•co•nos•ta•sisˌaɪ kəˈnɒs tə sɪs; -ˌsiz(n.)(pl.)-ses
a partition or screen on which icons are placed, separating the sanctuary from the main part of an Eastern church.
Origin of iconostasis:
1825–35; < MGk
a wall of icons between the sanctuary and the nave in an Eastern Orthodox church