The word "AIRA" is a rare noun that refers to a type of volcanic rock found in Iceland. The spelling of this word can be explained using the International Phonetic Alphabet (IPA) as /ˈaɪrə/. The first sound, /aɪ/, is a diphthong that represents the glide from the open front unrounded vowel /a/ to the near-close near-front unrounded vowel /ɪ/. The second sound, /r/, is a voiced alveolar trill that produces a rolling or fluttering effect. Finally, the last sound, /ə/, is a neutral central vowel that is often referred to as a schwa sound.