1. chemical substances that kill or disable sperm, used as contraceptives
Usage: medical; plural form

Examples

• Spermicides are often used in combination with barrier methods of contraception.
• The doctor explained how spermicides work to prevent pregnancy.
• Some contraceptive foams contain spermicides as their active ingredient.
• Spermicides can be found in various forms including creams and gels.
• The effectiveness of spermicides varies depending on proper application.
• Many diaphragms are used together with spermicides for added protection.