The phrase "reaction rates" refers to how quickly a chemical reaction happens. It measures the speed at which reactants (substances undergoing the reaction) are converted into products (new substances formed during the reaction). Full definition
I'd like to see if there are any differences in allergy rates or allergic reaction rates in groups that separate and groups that don't. (askmoxie.org)
If 100,000 doses of product A have been administered, it has an adverse reaction rate of 0.1 %. (amcny.org)
To better understand what was going on, he spent over a year building a reactor, fine - tuning experimental procedures, then collecting and analyzing reaction rate data. (sciencedaily.com)