Thorina is a name that belongs to the family of Norse mythology, but its spelling might be a bit confusing. The correct way to spell it is /θɔriːnə/. In IPA phonetic transcription, it starts with the voiceless dental fricative /θ/, followed by the vowel sound /ɔː/ that represents the "o" sound in "au". The next syllable is the stress syllable /riː/, which contains the long "i" sound. Finally, it ends with the neutral vowel sound /ə/. With this transcription, you can easily spell and pronounce this lovely name.
One of the primitive earths obtained from the mineral thorite; oxide of thorium.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.