lignin
- n a complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants
lightness
- n a feeling of joy and pride
- n the property of being comparatively small in weight
the lightness of balsa wood - n the gracefulness of a person or animal that is quick and nimble
- n having a light color
- n the visual effect of illumination on objects or scenes as created in pictures
- n the trait of being lighthearted and frivolous
lightning
- n abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light
- n the flash of light that accompanies an electric discharge in the atmosphere (or something resembling such a flash); can scintillate for a second or more
lightning arrester
- n electrical device inserted in a power line to protect equipment from sudden fluctuations in current
lightning bug
- n nocturnal beetle common in warm regions having luminescent abdominal organs
lightning conductor
- n a metallic conductor that is attached to a high point and leads to the ground; protects the building from destruction by lightning
lightning rod
- n someone who is a frequent target of negative reactions and serves to distract attention from another
- n a metallic conductor that is attached to a high point and leads to the ground; protects the building from destruction by lightning
lights-out
- n a prescribed bedtime
- n (military) signal to turn the lights out