reaction

See also réaction

English

Etymology

Old French reaction, from Latin reactio, from the verb reago, from re- (“again”) + ago (“to act”). More at English re-, action.

Pronunciation

• X-SAMPA: /ri'{kS@n/

• Audio (US)

  (file)

• Rhymes: -ækʃən

Noun

reaction (plural reactions)

1. An action or statement in response to a stimulus or other event

   The announcement of the verdict brought a violent reaction.

   You were in the courtroom. What is your reaction?

   When I last tried to eat strawberries I had a terrible allergic reaction.

2. (chemistry) A transformation in which one or more substances is converted into another by combination or decomposition

   In this reaction, the acid and base will neutralize each other, producing a salt.

Related terms

• chain reaction
• mixed reactions
• react
• reactant
• reaction time
• reactor
• reactional

Translations

action in response to an event

• Afrikaans: reaksie (af)
• Albanian: reagim (sq)
• Arabic: رد فعل (ar) (rad fiʿl) m
• Armenian: ռեակցիա (hy) (ṙeakc’ia), հետադիմություն (hy) (hetadimut'yun)
• Belarusian: рэакцыя (be) (reákcyja) f
• Bulgarian: реакция (bg) (reákcija) f
• Catalan: reacció (ca) f
• Chinese:

  Mandarin: 反應 (cmn), 反应 (cmn) (fǎnyìng), (political) 反動 (cmn), 反动 (cmn) (fǎndòng)

• Czech: reakce (cs) f
• Dutch: reactie (nl) f
• Esperanto: reakcio (eo), reago (eo)
• Finnish: reaktio (fi), vastatoimi (fi)
• French: réaction (fr) f
• Galician: reacción (gl) f
• German: Reaktion (de) f
• Hindi: प्रतिक्रया (hi) (pratikrayā)
• Hungarian: reakció (hu)
• Indonesian: reaksi (id)
• Irish: frithghníomhaíocht (ga) f

• Italian: reazione (it) f
• Japanese: 反応 (ja) (はんのう, hannō), (political) 反動 (ja) (はんどう, handō)
• Korean: 반응 (ko) (baneung) (反應 (ko)), (political) 반동 (ko) (bandong) (反動 (ko))
• Luxembourgish: Reaktioun (lb) f
• Malay: reaksi (ms)
• Polish: reakcja (pl) f
• Portuguese: reação (pt) f
• Punjabi: ਰੇਅਕ੍ਤਿਓਨ (pa) f
• Romanian: reacția (ro) f, reacție (ro) m
• Russian: реакция (ru) (reákcija) f
• Spanish: reacción (es) f
• Swahili: mmenyuko (sw)
• Swedish: reaktion (sv) c
• Telugu: ప్రతిచర్య (praticharya), ప్రతిక్రియ (pratikriya); చర్య (charya) (in chemical reaction)
• Thai: ปฏิกิริยา (th) (bpà-dtì gìríyaa)
• Turkish: tepki (tr), reaksiyon (tr)
• Ukrainian: реакція (uk) (reákcija) f
• Vietnamese: phản ứng (vi) (反應 (vi))

chemical transformation

• Arabic: تفاعل (ar) (tafāʿul) m
• Armenian: փոխազդեցություն (hy) (p’oxazdec’ut’tyun), ռեակցիա (hy) (ṙeakc’ia)
• Belarusian: рэакцыя (be) (reákcyja) f
• Bulgarian: реакция (bg) (reákcija) f
• Catalan: reacció (ca) f
• Chinese:

  Mandarin: 反應 (cmn), 反应 (cmn) (fǎnyìng)

• Czech: reakce (cs) f
• Finnish: reaktio (fi)
• French: réaction (fr) f

• German: Reaktion (de) f
• Icelandic: hvörf (is) n pl, hvarf (is) n
• Irish: imoibriú (ga) m
• Japanese: 反応 (ja) (はんのう, hannō)
• Korean: 반응 (ko) (baneung) (反應 (ko))
• Luxembourgish: Reaktioun (lb) f
• Russian: реакция (ru) (reákcija) f
• Ukrainian: реакція (uk) (reákcija) f
• Vietnamese: phản ứng (vi) (反應 (vi))

Anagrams

• actioner
• anticore
• creation