Definition: Describing something that does not allow any light to pass through, meaning it is completely sealed against light.

Example: The lighttight box kept the contents safe from exposure to sunlight.

Definition: A type of natural compound found in plants that has antioxidant properties and can mimic estrogen in the body.

Example: Lignans are often found in seeds, particularly flaxseeds, and are known for their health benefits.

Definition: The process of turning into wood or becoming woody in nature.

Example: The lignification of the plant's tissues helps it become more durable and resistant to decay.

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.

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.

Definition: A complex substance found in plants that helps to strengthen their cell walls and is a major part of wood.

Example: Lignin is an important component of the structure of trees and plants.

Definition: A type of soft coal that is brownish-black and is formed from decomposed plant material. It is less hard than bituminous coal and is often used for electricity generation.

Example: The power plant uses lignite as a fuel source to generate electricity.

Definition: Relating to or containing a type of coal that is brownish-black and has a lower carbon content than other coals.

Example: The lignitic coal found in the region is used primarily for electricity generation.

Definition: A material made from a mix of lignin and cellulose that provides strength to the cell walls of woody plants.

Example: Lignocellulose is an important component in the production of biofuels.

Definition: Relating to or derived from a type of plant material that consists of cellulose and lignin, often used in the context of biomass products.

Example: Lignocellulosic materials are important for producing biofuels.

Definition: A flammable liquid derived from petroleum, used mainly as a solvent in various applications.

Example: The chemist used ligroin to dissolve the organic compounds in the experiment.