The word "oxygonal" is spelled with a "y" instead of an "i" because it is derived from the Greek word "oxugonon." In IPA phonetic transcription, it is pronounced /ɑksɪˈɡɒnəl/. The first syllable, "oxy," is pronounced like "oxi" with a short "i" sound, followed by a stressed "g" sound. The ending is pronounced with a schwa sound in the second-to-last syllable, and a short "l" sound in the final syllable. The word means having eight sides or angles.