Word parts dilute + -ion Pronunciation (UK) IPA (key): /daɪˈljuːʃən/ (US) IPA (key): /daɪˈluʃən/ or /dɪˈluʃən/ Audio (US)(file) Noun Singular dilution Plural dilutions (countable & uncountable) Dilution is the process of making something dilute.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads