ascension

Concise Oxford English Dictionary © 2008 Oxford University Press:
ascension/əˈsenʃn/

▶noun

• 1 the action of rising to a higher position or level.

• 2 (Ascension) the ascent of Christ into heaven on the fortieth day after the Resurrection.

– derivatives
ascensional adjective.

– origin ME: via OFr. from L. ascensio(n-), from ascendere (see ascend).