| reduction simplification | the act of reducing complexity |
| reaction | doing something in opposition to another way of doing it that you don't like, his style of painting was a reaction against cubism |
decrease
diminution
reduction
step-down | the act of decreasing or reducing something |
discount
price reduction
deduction | the act of reducing the selling price of merchandise |
reaction
response | a bodily process occurring due to the effect of some antecedent stimulus or agent, a bad reaction to the medicine, his responses have slowed with age |
immune response
immune reaction
immunologic response | a bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigen |
anamnestic response
anamnestic reaction | renewed rapid production of an antibody on the second (or subsequent) encounter with the same antigen |
reflex
reflex response
reflex action
instinctive reflex
innate reflex
inborn reflex
unconditioned reflex
physiological reaction | an automatic instinctive unlearned reaction to a stimulus |
conditional reflex
conditioned reflex
acquired reflex
conditional reaction
conditioned reaction
conditional response
conditioned response | an acquired response that is under the control of (conditional on the occurrence of) a stimulus |
learned reaction
learned response | a reaction that has been acquired by learning |
startle response
startle reaction | a complicated involuntary reaction to a sudden unexpected stimulus (especially a loud noise), involves flexion of most skeletal muscles and a variety of visceral reactions |
| transfusion reaction | reaction of the body to a transfusion of blood that is not compatible with its own blood, an adverse reaction can range from fever and hives to renal failure and shock and death |
reaction-propulsion engine
reaction engine | a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream |
| reaction turbine | a turbine with blades arranged to develop torque from gradual decrease of steam pressure from inlet to exhaust |
| reduction gear | gearing that reduces an input speed to a slower output speed |
Wassermann test
Wasserman reaction
Wassermann | a blood test to detect syphilis, a complement fixation test is used to detect antibodies to the syphilis organism treponema, a positive reaction indicates the presence of antibodies and therefore syphilis infection |
third law of motion
Newton's third law of motion
Newton's third law
law of action and reaction | action and reaction are equal and opposite |
| reaction | an idea evoked by some experience, his reaction to the news was to start planning what to do |
| reaction | extreme conservatism in political or social matters, the forces of reaction carried the election |
Irish National Liberation Army
INLA
People's Liberation Army
People's Republican Army
Catholic Reaction Force | a radical terrorist group dedicated to the removal of British forces from Northern Ireland and the unification of Ireland |
| reaction | a response that reveals a person's feelings or attitude, he was pleased by the audience's reaction to his performance, John feared his mother's reaction when she saw the broken lamp |
| reaction | (mechanics) the equal and opposite force that is produced when any force is applied to a body, every action has an equal and opposite reaction |
| reaction propulsion | propulsion that results from the ejection at high velocity of a mass of gas to which the vehicle reacts with an equal and opposite momentum |
| addition reaction | a chemical reaction in which one molecule is added to another |
| aldol reaction | a reaction of aldehydes resulting in an aldol |
| chain reaction | a series of chemical reactions in which the product of one is a reactant in the next |
| chain reaction | a self-sustaining nuclear reaction, a series of nuclear fissions in which neutrons released by splitting one atom leads to the splitting of others |
chemical reaction
reaction | (chemistry) a process in which one or more substances are changed into others, there was a chemical reaction of the lime with the ground water |
cooling
chilling
temperature reduction | the process of becoming cooler, a falling temperature |
decomposition decomposition reaction
chemical decomposition reaction | (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance |
defense mechanism
defense reaction
defence mechanism
defence reaction
defense
defence | (psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires |
| displacement displacement reaction | (chemistry) a reaction in which an elementary substance displaces and sets free a constituent element from a compound |
double decomposition
double decomposition reaction
metathesis | a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (ABCDADCB) |
| double replacement reaction | a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound |
| elimination reaction | a chemical reaction in which a molecule decomposes to two different molecules |
| endoergic reaction | a nuclear reaction occurring with absorption of energy |
| endothermic reaction | a chemical reaction accompanied by the absorption of heat |
| exoergic reaction | a nuclear reaction accompanied by the evolution of energy |
| exothermic reaction | a chemical reaction accompanied by the evolution of heat |
fusion
nuclear fusion
nuclear fusion reaction | a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy |
| light reaction | the first stage of photosynthesis during which energy from light is used for the production of ATP |
meiosis
miosis
reduction division | (genetics) cell division that produces reproductive cells in sexually reproducing organisms, the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants) |
neutralization
neutralisation
neutralization reaction
neutralisation reaction | a chemical reaction in which an acid and a base interact with the formation of a salt, with strong acids and bases the essential reaction is the combination of hydrogen ions with hydroxyl ions to form water |
| nuclear reaction | (physics) a process that alters the energy or structure or composition of atomic nuclei |
oxidation
oxidization
oxidisation | the process of oxidizing, the addition of oxygen to a compound with a loss of electrons, always occurs accompanied by reduction |
oxidationeduction
oxidoreduction
redox | a reversible chemical reaction in which one reaction is an oxidation and the reverse is a reduction |
| photochemical reaction | a chemical reaction produced by the action of light |
quellung
quellung reaction | the swelling of the capsule surrounding a microorganism after reaction with an antibody, the basis of certain tests for identifying microorganisms, pneumococcus quellung |
| reaction formation | (psychiatry) a defense mechanism in which a person unconsciously develops attitudes and behavior that are the opposite of unacceptable repressed desires and impulses and serve to conceal them, his strict morality is just a reaction formation to hide his sexual drive |
reduction
reducing | 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 |