sper ‧ mi ‧ cide /ˈspɜːməsaɪd, ˈspɜːmɪsaɪd $ ˈspɜːr-/ BrE AmE noun [uncountable and countable]
a cream or liquid that kills ↑ sperm , used while having sex to prevent the woman from becoming ↑ pregnant
—spermicidal /ˌspɜːməˈsaɪdl◂, ˌspɜːmɪˈsaɪdl◂ $ ˌspɜːr-/ adjective [only before noun] :
spermicidal cream