LAUGHTER n.
ticularly of the lips, with a peculiar expression of the eyes, indicating merriment, satisfaction, or derision, and usually attended by a sonorous and interrupted expulsion of air from the lungs. See Laugh, v. i. The act of laughter, which is a sweet contraction of the muscles of the face, and a pleasant agitation of t…
LEUCIN n.
tter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found 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-…
MELTING n.
Liquefaction; the act of causing (something) to melt, or the process of becoming melted. Melting point (Chem.), the degree of temperature at which a solid substance melts or fuses; as, the melting point of ice is 0º Centigrade or 32º Fahr., that of urea is 132º Centigrade. -- Melting pot, a vessel in which anything is…