congealing

(v) : (transitive) To change from a liquid to solid state, perhaps due to cold; called to freeze in nontechnical usage.

(v) : (intransitive) To become congealed, solidify.

(v) : (transitive) To coagulate, make curdled or semi-solid such as gel or jelly.

(v) : (transitive) To make rigid or immobile.