Source : Webster's Revised Unabridged Dictionary (1913)

Chondrify \Chon"dri*fy\, v. t. & i. [Gr. ? cartilage + -fy.]
   To convert, or be converted, into cartilage.

Source : WordNet®

chondrify
     v : turn into cartilage; "The tissue chondrifies"
     [also: {chondrified}]