lime (calcium oxide)
White, caustic, lumpy powder, CaO, used as a refractory, as a flux, in
manufacturing steel and paper, in glassmaking, in waste treatment, in
insecticides, and as an industrial alkali.

Slaked lime is calcium hydroxide, a soft white powder, Ca(OH)2, used in
making mortar, cements, calcium salts, paints, hard rubber products, and
petrochemicals.

litmus
Coloring material from lichens that turns red in acid solutions and blue
in alkaline solutions.

Liveforever (orpine, orpin, livelong, Sedum telephium)
Perennial northern temperate plant with toothed leaves and heads of
small purplish-white flowers.

lobelia
See Herb Department, page 428.

lochia
Normal uterine discharge of blood, tissue, and mucus from the vagina
after childbirth.

lupus
Systemic lupus erythematosus. Chronic skin conditions characterized by
ulcerative lesions that spread over the body. No longer in scientific
use.

lupulin