platelet
part of speech
noun (a platelet, platelets)
meaning for a pupil
A tiny piece in your blood that helps it clot (go thick and sticky) to stop bleeding when you are cut. tree →
sense in the lessons
In science lessons about the body, blood is made of plasma, red blood cells, white blood cells and platelets. Platelets rush to a cut and stick together to make a plug, which becomes a scab. In hospital stories a "platelet count" is checked; people can donate platelets.
examples
- Platelets help your blood clot when you cut your finger. tree →
- Blood is made of plasma, red cells, white cells and platelets. tree →
- The scab on your knee started with platelets sticking together. tree →
- The doctor checked her platelet count. tree →
- Platelets are much smaller than red blood cells. tree →
- Some people donate platelets to help patients in hospital. tree →
note
Countable: a platelet, platelets; usually used in the plural. The word means "little plate" because of their flat shape. Platelets are not full cells; they are fragments of bigger cells.
In the corpora
- Red blood cells carry oxygen using iron-rich haemoglobin, white cells fight germs, and platelets help stop bleeding.
- When you cut yourself, platelets and stringy fibres make a net that plugs the cut and hardens into a scab.
Trees and pragmatics
Every meaning and example of «platelet» parsed by Mova, each sentence with its dependency tree and frames.