Dictionary of molecular biology. 2004.
organosulfur compound — ▪ chemical compound Introduction also spelled organosulphur compound , also called organic sulfur compound a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… … Universalium
quaternary ammonium compound — noun a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface active agents, disinfectants, and in drugs • Hypernyms: ↑organic compound * * * noun also quaternary ( es) : any of a large class of strong… … Useful english dictionary
quaternary ammonium compound — n any of numerous strong bases and their salts derived from ammonium by replacement of the hydrogen atoms with organic radicals and important esp. as surface active agents, disinfectants, and drugs called also quat, quaternary * * * an organic… … Medical dictionary
quaternary ammonium compound — noun Date: circa 1934 any of numerous strong bases and their salts derived from ammonium by replacement of the hydrogen atoms with organic radicals and important especially as surface active agents, disinfectants, and drugs … New Collegiate Dictionary
quaternary ammonium compound — Chem. any of a class of salts derived from ammonium in which the nitrogen atom is attached to four organic groups, as in benzalkonium chloride; the salts are cationic surface active compounds used as antiseptics and disinfectants. Also called… … Universalium
organometallic compound — ▪ chemical compound Introduction any member of a class of substances containing at least one metal to carbon bond in which the carbon is part of an organic group. Organometallic compounds constitute a very large group of substances that have… … Universalium
Organozinc compound — Organozinc compounds in organic chemistry contain carbon to zinc chemical bonds. Organozinc chemistry is the science of organozinc compounds describing their physical properties, synthesis and reactions.[1][2][3] … Wikipedia
surfactant — A surface active compound; the best known example of which is the lung surfactant that renders the alveolar surfaces hydrophobic and prevents the lung filling with water by capillary action. The lung surfactant is produced just at parturition,… … Dictionary of molecular biology
drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… … Universalium
Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… … Universalium
