noun
- small colorless cell fragments in blood that help form clots to stop bleeding
Usage: medical; biology
Examples
- The doctor ordered a blood test to check her platelet count.
- Platelets rush to the site of an injury to help stop bleeding.
- Low platelet levels can cause excessive bruising.
- Platelets are produced in the bone marrow.
- The patient needed a platelet transfusion before surgery.
- Aspirin can affect how platelets function in blood clotting.