intransitive verb
Definition: To change into wood or become woody by developing lignin in the cell walls.
Example: As the plant matures, it will lignify, giving it a stronger structure.
transitive verb
Definition: To turn into wood or a wood-like substance by adding lignin, which is a complex organic polymer found in the cell walls of many plants.
Example: The plant cells will lignify as they mature, giving them strength and structure.