The correct spelling of the word "anesthone" is actually "anaesthone" in British English, and "anesthone" in American English. The first syllable, "an-", is pronounced /ən/ and the second syllable, "-aesth-", is pronounced /i:st/, with a long "e" sound. The final syllable, "-one", is pronounced /əʊn/. Anaesthone is a rarely used medical term used for a type of local anesthesia, which is used to numb a particular area of the body.
Trade name of para-amido-ethyl-benzoate, a local anesthetic.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.