In the phonetic alphabet, what is the designation for the letter "X"?

The designation for the letter "X" in the phonetic alphabet is "X-ray." This terminology is part of the International Radiotelephony Spelling Alphabet, commonly used to ensure clear communication over radio and telephone, especially in noisy environments. Each letter is assigned a specific word to avoid confusion with similar-sounding letters. For example, "X-ray" is distinctive and easily understood, reducing the potential for miscommunication. Recognizing the correct phonetic term is crucial for effective communication in aviation, military operations, and other fields where clarity is paramount.