The spelling of the word "ratner" can be explained using the International Phonetic Alphabet (IPA). The first sound is the "r" sound, pronounced as /r/. The second sound is the short "a" sound, pronounced as /æ/. The third sound is the "t" sound, pronounced as /t/. The fourth sound is the "n" sound, pronounced as /n/. The last sound is the "er" sound, pronounced as /ər/. Altogether, "ratner" is pronounced as /ræt.nər/. This word refers to a person or business with the surname "Ratner."
The word ratner does not seem to have a widely recognized etymology. Ratner is not a common word in English or any other language. It is possible that ratner could be a surname of Ashkenazi Jewish origin. There is a well-known restaurant chain called Ratner's in New York City, which was opened by a Jewish immigrant named Harry Ratner in the early 20th century. However, it is unclear if the surname Ratner has any specific etymology or if it is simply a variation of other surnames such as Ratnerovich or Ratnitsky. Without further information, it is difficult to determine the exact etymology of the word ratner.