What is the phonetic alphabet term for the letter 'D'?

The phonetic alphabet term for the letter 'D' is "Delta." This term helps in enhancing clarity and understanding during verbal communications, especially in aviation and military contexts, where miscommunication can lead to serious consequences. Each letter of the phonetic alphabet is represented by a distinct word to prevent confusion caused by similar-sounding letters. The use of "Delta" for 'D' is widely recognized and facilitates effective communication, ensuring that everyone understands the intended letter without ambiguity.