ex⋅o⋅dus  [ek-suh-duhs]
–noun
1. a going out; a departure or emigration, usually of a large number of people: the summer exodus to the country and shore.
2. the Exodus, the departure of the Israelites from Egypt under Moses.
3. (initial capital letter) the second book of the Bible, containing an account of the Exodus. Abbreviation: Ex.

Origin:
< L: a going out < Gk éxodos a marching out, going out, equiv. to ex- ex- 3 + (h)odós way