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• n  a contraceptive agent that kills spermatozoa

• Inserted any time up to 16 hours before intercourse, the sponge releases its spermicide gradually, killing and absorbing sperm before they can reach the cervix.
• Both contraceptives are used with spermicide.
• Take the practice of women in ancient Egypt who resorted to using crocodile dung as a spermicide.

• spermatocide