The spelling of "McKibben" can be explained using IPA phonetic transcription. The "Mc" is pronounced as /mək/, with a schwa sound for the "ə". The "Ki" is pronounced as /kɪ/ with a short "i" sound. The double "b" is pronounced as /b/ with emphasis on the second "b". Finally, the "en" is pronounced as /ən/ with a schwa sound for the "ə". Therefore, "McKibben" is spelled phonetically as /məkɪbən/. It is important to use accurate spelling and pronunciation for proper identification and communication.