dome. 1  a vault, having a circular plan and usually in the form of a portion of a sphere, so constructed as to exert an equal thrust in all directions. 2  a domical roof or ceiling. 3  a polygonal vault, ceiling, or roof.
Egyptian Arabic is used in most social situations, with Modern Standard and Classical Arabic generally only being used in writing and in highly religious and/or formal situations. However, within Egyptian Arabic, there is a wide range of variation.
Cairo is the largest city in the Arab world. 1  Arabic is today spoken by more than 200 million people in the Arab World, and it is an official language in 22 countries. 2  Arabic is also an important language in many countries bordering on the Arab World, like Mali, Niger, Chad, Eritrea, Djibouti, Ethiopia and Somalia. Arabic is also an important language in many countries bordering on the Arab World, like Mali, Niger, Chad, Eritrea, Djibouti, Ethiopia and Somalia. 2  There are also Arabic-speaking populations in parts of southern Turkey and southwestern Iran.