The word "Xiphoidian" is a term used to describe a certain anatomical structure of the human body. It refers to the xiphoid process, which is a small, cartilaginous extension at the lower end of the sternum. The spelling of "xiphoidian" is derived from the Greek word "xiphos", meaning "sword", and the suffix "-oid", indicating "resembling". The proper IPA phonetic transcription for "xiphoidian" is /zɪˈfɔɪdiən/, with stress on the second syllable.