noun🔗ShareLigninaA complex non-carbohydrate aromatic polymer present in all wood."The brown color of cardboard comes from the lignin that remains in the wood pulp used to make it. "El color marrón del cartón proviene de la lignina que permanece en la pulpa de madera utilizada para fabricarlo.substancematerialchemistryplantbiologybiochemistrycompoundagriculturescienceChat with AIVocabulary GamePractice Reading
