When liquid starts to thicken and become solid, it coagulates. When you get a cut, the blood flowing from the wound will coagulate: it will start to clot and form a solid scab so you will stop bleeding.

Many liquids have the potential to coagulate. If the cream you just poured into your coffee is spoiled, you'll see the cream coagulate as it curdles into little floating chunks. If someone has a heart condition that may result in a heart attack, he or she might take medication that keeps the blood in the arteries from coagulating, or dangerously thickening.

Definitions of coagulate

v change from a liquid to a thickened or solid state

coagulated blood”
turn from a liquid to a solid mass
Type of:
change state, turn
undergo a transformation or a change of position or action

v cause to change from a liquid to a solid or thickened state

Type of:
alter, change, modify
cause to change; make different; cause a transformation

adj transformed from a liquid into a soft semisolid or solid mass

coagulated, curdled, grumose, grumous
relatively dense in consistency

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