Obs. rare1. [n. of action f. L. aggelā-re to stiffen with cold; f. ag- = ad- to + gelā-re to freeze, f. gel-ū frost. Cf. congelation.] The act of freezing to, or congealing about.
a. 1681. Sir T. Browne, Pseud. Ep., II. i. (ed. 1686), 41. Growing greater or lesser according unto the accretion or pluvius aggelation about the mother and fundamental atomes.