The word "ETCO" is spelled using the International Phonetic Alphabet (IPA) as /ˈɛtkoʊ/. The first three letters of this word are pronounced like "et" as in "pet," combined with the sound of the letter "k." The final two letters are pronounced like "ko" as in "go" or "co" as in "cocoa." This spelling may be used in technical or scientific contexts and is likely an acronym or abbreviation. Accurate spelling is important to prevent confusion and ensure clear communication.