a. [ L. induratus, p. p. of indurare to harden. See Endure. ] [ 1913 Webster ]
v. t.
v. i. To grow hard; to harden, or become hard;
a. Hardened;
n. [ Cf. F. induration, L. induratio hardness of heart. ] [ 1913 Webster ]
A certain induration of character had arisen from long habits of business. Coleridge. [ 1913 Webster ]