Other spellings (UK) moisturiser Word parts moisturize + -er Pronunciation IPA (key): /ˈmɔɪstʃərʌɪzə/ Audio (UK)(file) Noun Singular moisturizer Plural moisturizers (countable) A moisturizer is a liquid or lotion that can be put on an object to make it wet or moist. I put moisturizer on my skin every morning to keep it soft. The oil acts as a moisturizer to the wood.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads