IPA: /ˈlɪɡnɪn/
KK: /ˈlɪɡnɪn/
A complex substance found in plants that helps to strengthen their cell walls and is a major part of wood.
Lignin is an important component of the structure of trees and plants.
Lignin comes from the Latin word "lignum" (meaning wood). The suffix "-in" is often used in chemistry to denote substances, particularly those derived from a specific source. Thus, lignin refers to a substance derived from wood.
Think of 'lignum' which means wood, and remember that lignin is a substance that comes from wood.