The spelling of the word "most compound" is straightforward when using IPA phonetic transcription. The word "most" is pronounced with the symbol /moʊst/ which indicates the long "o" sound followed by the "s" and "t" sounds. The word "compound" is pronounced with the symbol /kəm'paʊnd/ which indicates the "k" sound followed by the "uh" sound, the stressed "ow" sound, and the "nd" sound. When combining these two words, the spelling remains unchanged, and the pronunciation becomes /moʊst'kəm'paʊnd/.
The term "most compound" does not have a singular etymology as it is a combination of two words - "most" and "compound" - each with their own origins.
"Most" originated from the Old English word "mǣst", which means "greatest" or "most". It is derived from the Proto-Germanic word "maistaz" and ultimately from the Proto-Indo-European root "*méh₁yest", which also means "greatest".
"Compound" has Latin origins and can be traced back to the Latin word "componere", which means "to put together" or "to combine". This word is formed from the prefix "com-" meaning "together" and "ponere" meaning "to place" or "to build".