n (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
n an idea evoked by some experience
his reaction to the news was to start planning what to do
n a bodily process occurring due to the effect of some antecedent stimulus or agent
a bad reaction to the medicine
n (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
n 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
n extreme conservatism in political or social matters
the forces of reaction carried the election
n doing something in opposition to another way of doing it that you don't like
his style of painting was a reaction against cubism
Reaction cool to US arms plan for Syrian rebels WASHINGTON (AP) — The Obama administration hopes its decision to give lethal aid to Syrian rebels will prompt other nations to beef up assistance, now that the U.S. has cited evidence that the Syrian government used chemical weapons against its people. But the international reaction Friday ranged from flat-out disbelief of the U.S. intelligence assessments to calls for negotiation before more ...
June 15, 2013 - Associated Press via Yahoo! News
Polymerase Chain Reaction (PCR): Products/Tools - A Global Market Watch, 2009-2015 NEW YORK, June 13, 2013 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue: Polymerase Chain Reaction (PCR): Products/Tools – A Global Market Watch, ...
June 13, 2013 - PR Newswire via Yahoo! Finance
Ayub Khan in Common Dreams (press release) The locality has been a hub of militants. Locals set up a militia and expelled the militants from this area. This attack seems to be a reaction to their expulsion,Ayub Khan, the local police chief, told reporters.
President Bush in USA Today Bush said decisions about troop levels will be based on a "calm assessment" by military commanders in Iraq, and "not a nervous reaction by Washington politicians to poll results in the media."
Thierry Henry in Independent In yesterday's 220-word statement, Henry said that his handball in the build-up to William Gallas' goal had been "an instinctive reaction to a ball that was coming extremely fast in a crowded penalty area".