The correct spelling of the word "nephrodinic" can be explained through its IPA phonetic transcription, [nef-roh-din-ik]. Each syllable corresponds to a distinct sound, with emphasis on the second syllable. The prefix "nephro-" refers to the kidneys, and the suffix "-dinic" means relating to or derived from. So, "nephrodinic" describes something related to the kidneys. Ensuring correct spelling is crucial, especially in medical contexts where accuracy is vital to avoid confusion or miscommunication.