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chain reaction

A series of events wherein the outcome of each instance specifically influences or causes the next. The phrase comes from the occurrence of such reactions in chemistry and physics. Deciding to take a course studying James Joyce in college set up a chain reaction that ultimately led me to move to Ireland. When one bookshelf fell, it caused a chain reaction that knocked over all the rest.
See also: chain, reaction

gut reaction

A reaction to a situation based on a person's instinct and feelings, rather than on a logical analysis. My initial gut reaction was that the merger would result in a drop in stock prices, but the opposite turned out to be true.
See also: gut, reaction

knee-jerk reaction

Fig. an automatic or reflex reaction; an immediate reaction made without examining causes or facts. With one of his typical knee-jerk reactions, he said no immediately, citing some moral argument that no one understood.
See also: reaction

chain reaction

A series of events in which each influences or gives rise to the next event, as in If one person collects substantial damages by suing a company, you can expect a chain reaction of such lawsuits . The term originated in the physical sciences, first (1920s) chemistry and later (1940) physics; in the latter it denotes a process of nuclear fission. By the 1940s it had been transferred to more general use.
See also: chain, reaction

a gut reaction

COMMON A gut reaction is a reaction that you have immediately and strongly, without thinking about something or being aware of your reasons. At first my gut reaction was to never write again. My heart's loyal to the party but my gut reaction is to vote against the bill.
1. If you describe a task or activity as gut-busting, you mean it is very hard work. It would be hard work, he predicted — back-breaking, gut-busting, unbelievably hard work.
2. You can use gut-busting to describe a very large amount of food. Walker set a record by eating a gut-busting 32 pies.
See also: gut, reaction

gut reaction (to something)

n. a basic and immediate response to something. Her gut reaction to the plan is basically a good one.
See also: gut, reaction, something

gut reaction

See also: gut, reaction
References in periodicals archive ?
Results: The reaction was fully completed in 1 minute and produced N,N,N-tri(4-t-butylbenzyl)amine as the main product with the isolated yield of 29.
Common EasySampler applications include sampling reactions for impurity profiling, product formation, by-product formation, reaction progress by offline analysis and yield.
Anaphylactic reactions typically occur after multiple exposures to a drug: the first exposure primes the immune system, and then each successive exposure increases the body's defensive response.
The updated statement from the Academy regarding the diagnosis and management of anaphylaxis states: "Clinically, radiocontrast media reactions are identical to immediate hypersensitivity IgE-mediated reactions (anaphylaxis), but do not appear to involve IgE or any other immunologic mechanism" (2).
With Isentris, scientists only need a single application to explore a broad range of high quality reactions from Symyx as well as their own inhouse reaction data.
All other reactions should be reported to blood bank and the patient's physician.
b) raise questions provoked by reactions in the thread [Queries]; or
Researchers have speculated that antivenom might spur fewer allergic reactions if it contained only antibodies targeted to the most damaging toxins in venom.
None of 148 patients who tested negative for HLA-B*5701 developed the hypersensitivity reaction; three patients who tested positive took the drug anyway, and all of them did have the reaction.
3]), and consequently, surface reactions tend to be more important indoors than out.
9]Be(p,t) reaction was therefore the limiting factor in the choice of the proton beam energy.
Some individuals may only have mild reactions; others may have a history of severe reactions.
Patients with a history of drug reactions may be at risk for reactions to other types of drugs, they said.
If extensive reactions occur before the part 3 amine is introduced to catalyze part 1 and 2, problems can occur.
Use this handy chart to see how your reactions to common unpleasant road-trip situations stack up against the King of the Even Keel.