Aus·tral·a·sia 
(ô′strə-lāzhə)
(ô′strə-lāzhə)1. The islands of the southern Pacific Ocean, including Australia, New Zealand, and New Guinea.
2. Broadly, all of Oceania.
- irrefragable
- irrefragably
- irrefrangible
- irrefrangibly
- irrefutability
- irrefutable
- irrefutably
- irreg.
- irregardless
- irregular
- irregular galaxy
- irregularity
- irregularly
- irrelative
- irrelatively
- irrelevance
- irrelevancy
- irrelevant
- irrelevantly
- irreligion
- irreligious
- irreligiously
- irreligiousness
- irremeable
- irremediable