From The Collaborative International Dictionary of English v.0.48:
Congeal \Con*geal"\, v. t. [imp. & p. p. Congealed; p. pr. & vb. n. Congealing.] [F. congeler, L. congelare, -gelatumn; con- + gelare to freeze, gelu frost. See Gelid.] 1. To change from a fluid to a solid state by cold; to freeze.
Syn: jell, set. [1913 Webster]
A vapory deluge lies to snow congealed. --Thomson. [1913 Webster]
2. To affect as if by freezing; to check the flow of, or cause to run cold; to chill. [1913 Webster]
As if with horror to congeal his blood. --Stirling. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Congeal \Con*geal"\, v. i. To grow hard, stiff, or thick, from cold or other causes; to become solid; to freeze; to cease to flow; to run cold; to be chilled.
Syn: jell, set. [1913 Webster]
Lest zeal, now melted . . . Cool and congeal again to what it was. --Shak. [1913 Webster]