lig·ni·fy /ˈlɪgnəˌfaɪ/ 木化
Lig·ni·fy v. t. [imp. & p. p. Lignified p. pr. & vb. n. Lignifying ] Bot. To convert into wood or into a ligneous substance.
Lig·ni·fy, v. i. Bot. To become wood. ◄ ►