Dictionary of automotive terms. 2015.
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 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 — 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
Ammonium — This article is about the cation. For the ancient city, see Siwa Oasis. The NH4+ ion … Wikipedia
betaine — 1. An oxidation product of choline and a transmethylating intermediate in metabolism. 2. A class of compounds related to b.. (1) ( i.e., R3N= CHR′ COO−), e.g., glycine b.. SYN: glycine b.. b. aldehyde an … Medical dictionary
Halotolerance — is the adaptation of living organisms to conditions of high salinity. Halotolerant species tend to live in areas such as coastal dunes, saline deserts, salt marshes, and inland salt seas and springs. Halophiles are a group of bacteria that live… … Wikipedia
amine — aminic /euh mee nik, euh min ik/, adj. aminity /euh min i tee/, n. /euh meen , am in/, n. Chem. any of a class of compounds derived from ammonia by replacement of one or more hydrogen atoms with organic groups. [1860 65; AM(MONIUM) + INE2] * * *… … Universalium
Amine — For other uses, see Amine (disambiguation). Primary amine Secondary amine Tertiary amine … Wikipedia
ion-exchange reaction — ▪ chemical reaction Introduction any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions (ion)) that involves an exchange of one or more ionic components.… … Universalium
Fabric softener — (also called fabric conditioner) is used to prevent static cling and make fabric softer. It is available as a liquid, crystals and dryer sheets. Contents 1 Varieties 2 Composition 3 See also 4 Refe … Wikipedia
