Spermicides are chemicals that kill sperm. They are used to prevent pregnancy.
Spermicides are used to help prevent pregnancy, so they are usually seen as a good thing.
Examples:
She used spermicides to avoid getting pregnant.
You can buy spermicides at the store.
The doctor recommended using spermicides as a form of birth control.
The spermicides work to stop the sperm from reaching the egg.
Spermicides are an important part of birth control methods.
The spermicides are like a wall that stops the sperm from getting to the egg.