The spelling of the word "ACPASIM" can be broken down using the International Phonetic Alphabet (IPA). The first sound is the "a" as in "cat" sound (æ), followed by the "k" sound (k) combined with the "p" sound (p) to create the "kp" sound. The next two sounds are the "s" sound (s) and the "i" as in "bit" sound (ɪ). Finally, the word ends with the "m" sound (m). Thus, "ACPASIM" is spelled using the phonetic transcription: /ækpəsɪm/.