The word "Chartometer" is spelled with a "ch" sound, followed by "ar" which is pronounced as the vowel sound in "car". The next syllable, "to", is pronounced with a short "o" sound, while "me" is pronounced with a long "e" sound. The final syllable, "ter", is pronounced with the same "er" sound as in "sister" or "ladder". In IPA phonetic transcription, the word would be spelled /tʃɑːrtɒmɪtə/.