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The act or process of passing, or causing to pass, from a fluid to a solid state, as by the abstraction of heat; the act or process of freezing.

A mass or nodule of solid matter formed by growing together, by congelation, condensation, coagulation, induration, etc.; a clot; a lump; a calculus. Accidental ossifications or deposits of phosphates of lime in certain organs . . . are called osseous concretions. Dunglison.

That which is formed by congelation; a clot. [Obs.]

act or process of changing into ice, or the state of being converted to ice; a freezing; congelation; also, a frost. Bacon.

The act of freezing; -- applied chiefly to the congelation of water; congelation of fluids.

Small roundish masses of ice precipitated from the clouds, where they are formed by the congelation of vapor. The separate masses or grains are called hailstones. Thunder mixed with hail, Hail mixed with fire, must rend the Egyptian sky. Milton.

The white particles formed by the congelation of dew; white frost. [Written also horefrost. See Hoar, a.] He scattereth the hoarfrost like ashes. Ps. cxlvii. 16.

The act of chilling or causing to become cold; a chilling; coldness; congelation. [Obs.] Boyle.

A column of igneous rock formed by congelation of lava in the conduit of a volcano and later exposed by the removal of surrounding rocks.