Congeal (verb)

1. To cause a liquid to become solid or semisolid, especially by cooling.
2. To cause something to become firm or solid.

Origin:

Late middle english: from old french congeler, from latin congelare, from con- 'together' + gelare 'freeze'.

Examples:

1. The soup was left in the refrigerator overnight and congealed.
2. The blood congealed and formed clots.
3. The paint congealed on the brush, making it difficult to clean.
4. The mixture was heated until it congealed into a thick paste.
5. The jelly was chilled until it congealed into a firm, wobbly mass.