acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction; "of the top 50 commodity chemicals, 30 are created directly by catalysis and another 6 are made from raw materials that are catalytically produced"
serving to permit or facilitate further work or activity; "discussed the working draft of a peace treaty"; "they need working agreements with their neighbor states on interstate projects"
adequate for practical use; especially sufficient in strength or numbers to accomplish something; "the party has a working majority in the House"; "a working knowledge of Spanish"
a substance capable of bringing about fermentation
cause to undergo fermentation; "We ferment the grapes for a very long time to achieve high alcohol content"; "The vintner worked the wine in big oak vats"
work up into agitation or excitement; "Islam is fermenting Africa"
be in an agitated or excited state; "The Middle East is fermenting"; "Her mind ferments"
any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent