The word "retzian" may seem difficult to spell, but its pronunciation can be easily understood through the use of IPA phonetic transcription. The word is pronounced /ˈrɛtsɪən/, with the stress on the first syllable. "Retzian" is an adjective that refers to the Austrian botanist, Johann Nepomuk von Retz, and it is often used to describe plants or flowers that are native to Austria. So, while the spelling of "retzian" may be tricky, its phonetic pronunciation is simple and easy to understand.