an amount of time

the era of Islam's ascendancy from the death of Mohammed until the 13th century; some Moslems still maintain that the Moslem world must always have a calif as head of the community

the time period beginning with the supposed year of Christ's birth

highly significant or important especially bringing about or marking the beginning of a new development or era

an era of existence or influence

an era of history having some distinctive feature

the present or recent times

the era of Islam's ascendancy from the death of Mohammed until the 13th century; some Moslems still maintain that the Moslem world must always have a calif as head of the community

the time period beginning with the supposed year of Christ's birth