IPA /ˌaɪ.piːˈeɪ/ noun6 •Transcription written in the International Phonetic Alphabet. •Initialism of India pale ale.Not bad for an amber or pale ale, but India pale ale, I don't think so. So why does Bass put IPA on the label? — 1998 •Initialism of isopropyl alcohol. •An IPA file, or an iOS, iPadOS, watchOS, or tvOS app distributed via IPA files. •Initialism of isophthalic acid. •Initialism of isopropyl acetate. formsIPAs