Pronunciation (US) IPA (key): /ˈsɝˌplʌs/ or /ˈsɝpləs/ (UK) IPA (key): /ˈsɜːpləs/ Audio (UK)(file) Hyphenation: sur‧plus Noun Singular surplus Plural surpluses or surplusses A surplus is when there is more of a good than is strictly needed.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads