The spelling of the word "lustralia" is incorrect. The correct spelling is "Australia" /ɒˈstreɪliə/, with the stress on the second syllable. The IPA phonetic transcription provides a useful tool to understand the pronunciation of words. In this case, the first letter "A" is pronounced as a short "o" /ɒ/, followed by the "u" sound /ʌ/ that is commonly found in British English. The second syllable is pronounced with a long "a" sound /eɪ/, while the final syllable is a schwa /ə/.
The purifying sacrifices or feasts of the anc. Romans, held every fifth year.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.