The spelling of the word PPDPC can be explained using the International Phonetic Alphabet (IPA). The first two letters, "pp", represent a voiceless bilabial stop /p/. The following two letters, "dp", represent a voiced alveolar stop /d/ followed by a voiceless bilabial stop /p/. The final letter, "c", represents a voiceless palatal stop /c/. Therefore, the spelling of PPDPC corresponds to the sounds /p/ /p/ /d/ /p/ /c/. This word may have a specific meaning in a certain field or context.