Source : Webster's Revised Unabridged Dictionary (1913)

Calcify \Cal"ci*fy\ (k[a^]l"s[i^]*f[imac]), v. t. [imp. & p. p.
   {Calcified} (-f[imac]d); p. pr. & vb. n. {Calcifying}.] [L.
   calx, calcis, lime + -fy.]
   To make stony or calcareous by the deposit or secretion of
   salts of lime.