A term describing the reaction
rate of a chemical reaction
in which the rate is proportional to the concentration (in mole
s) of only one of the reactants. Such a reaction might have an equation
like "rate = k[A]," where k is the reaction rate constant and [A] is the concentration of a reactant A.
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.