/ˈspɜ:mɪsaɪd ||; ˈspɝməˌsaɪd/noun [C,U] a substance that kills sperm, used during sex to prevent the woman from becoming pregnant 杀精子剂 ➔spermicidal /ˌspɜ:mɪˈsaɪdl ||; ˌspɝməˈsaɪdḷ/ adj (only before a noun 只用于名词前): spermicidal cream 杀精乳膏