Pronunciation (UK) IPA (key): /ˈmɔɪstʃə/ (US) IPA (key): /ˈmɔɪstʃɚ/ Audio (US)(file) Noun Singular moisture Plural moistures (uncountable) Moisture is a small amount of liquid that makes something wet. Related words moisturize/moisturise moisturizer/moisturiserWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads