Coagulate (verb)

1. To cause a liquid to change into a solid or semi-solid state, often by the action of heat, chemicals, or enzymes.
2. To cause a liquid to thicken or solidify due to the formation of a coagulum.

Origin:

From latin coagulatus, past participle of coagulare ("to coagulate"), from coagulum ("coagulum"), from coagulare ("to curdle").

Examples:

1. The milk coagulated when it was heated.
2. The blood coagulated after a few minutes.
3. The egg whites coagulate when they are cooked.
4. The mixture coagulated after it was left to sit for a few hours.
5. To thicken the sauce, you need to add a coagulating agent.