The spelling of the word "Lentner" can be explained through the International Phonetic Alphabet (IPA) phonetic transcription. The word consists of two syllables, "Lent" and "ner" which are pronounced as /lɛnt/ and /nɜr/ respectively. "Lent" is pronounced with the "e" sound as in "pet" and "ner" is pronounced with the vowel sound in "turn". Therefore, the correct spelling of the word is "Lentner" and the pronunciation is /lɛntnɜr/.
The term "Lentner" originates from the German language. Its etymology can be traced back to the Middle High German word "lentner" or "lentnære", which means "guardian" or "caretaker". This word ultimately comes from the Old High German word "lentēnāri", which referred to someone responsible for the "lent" or the loaned property of someone else. Over time, the term "Lentner" evolved to primarily denote the guardian or caretaker of a gate or entrance, such as that of a castle or city wall.