The word "Hypothenal" is a technical term that refers to the area below the hypotenuse of a right-angled triangle. Its spelling can be explained using the International Phonetic Alphabet (IPA) transcription, which is /haɪpəˈθiːnəl/. The stress is on the second syllable, indicated by the apostrophe, and the vowel sounds are "ai" as in "high," "e" as in "see," and "a" as in "cat." The final syllable features a neutral vowel "ə" and the consonants are "th" for "θ" and "n" for "n."