The word "MMTX" is spelled using the following IPA phonetic transcription: /em/ /em/ /teks/. The first two symbols represent the sound "em" which is a nasal sound made by closing the lips and forcing air out through the nose. The third symbol "t" represents the sound "t" which is a voiceless alveolar stop. The fourth symbol "e" represents the sound "e" which is a mid-front vowel. The fifth symbol "ks" represents the sound "ks" which is a voiceless velar fricative followed by a voiceless alveolar fricative.