The spelling of the word "Subbrachian" follows the phonetic transcription IPA /sʌbˈbrækɪən/. The prefix "sub-" means "below" or "underneath", while "brachia" refers to the arms or upper limbs. Therefore, "Subbrachian" can be defined as pertaining to or located beneath the arms. The spelling of this word is straightforward, with the "sub-" prefix followed by the root word "brachia" and the suffix "-an", which means "pertaining to". In summary, "Subbrachian" is a simple yet descriptive word that is easy to spell and define.