LENS n.
uments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. Lenses
LEUCIN n.
nd as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom. Chemically it is to be considered as amido-caproic acid. (CH3)2CH.CH2.CH(NH2)-COOH. L-leucine, the natural form, is present in most proteins.
LINT n.
Linen scraped or otherwise made into a soft, downy or fleecy substance for dressing wounds and sores; also, fine ravelings, down, fluff, or loose short fibers from yarn or fabrics. Lint doctor (Calico-printing Mach.), a scraper to remove lint from a printing cylinder.
LITHIUM n.
rring in several minerals, as petalite, spodumene, lepidolite, triphylite, etc., and otherwise widely disseminated, though in small quantities.