lightfastness

02.10.2025

Resistance to fading to the effects of sun or light.

life cycle inventory (LCI)

The part of the LCA process that quantifies the energy, input of raw material and releases of material into the environment that are associated wit...

life cycle cost (LCC)

The amortized annual cost of a product, including capital costs, installation costs, operating costs, maintenance costs and disposal costs discount...

life cycle assessment, life cycle analysis (LCA)

A technique for assessing the potential environmental impacts of a product by examining all the material and energy inputs and outputs at each life...

Lethal Dose 50 (LD50)

The median lethal dose (LD50) is the statistically derived median dose of a substance that can be expected to cause death in 50 percent of the test...

Lethal Concentration 50 (LC50)

An LC50 value is the concentration of a specific material in the air that will kill 50% of the test subjects (animals, usually) when administered a...

leno

A structure in which pairs of warp yarns are twisted around each other between filling yarns, giving open-weave fabrics firmness and durability.

leather

An animal skin that has been transformed into useful material through tanning.

Leadership in Energy and Environmental Design Accredited Professionals (LEED AP)

LEED Professional Accreditation distinguishes building professionals with the knowledge and skills to successfully steward the LEED certification p...