react

v., -act·ed, -act·ing, -acts.

v.intr.

1. To act in response to or under the influence of a stimulus or prompting: reacted strongly to the sarcastic tone of the memorandum.
2. To act in opposition to a former condition or act: composers who reacted against romanticism.
3. To act reciprocally or in return.
4. Chemistry. To undergo a reaction: Methane reacts with hydroxyl to produce formaldehyde.

v.tr. Chemistry
To cause (a substance or substances) to undergo a reaction.

also react to

verb

1. To act in return to something, as a stimulus: respond. See action/inaction.
2. To present with a specified reaction: greet, meet¹, respond. See feelings, greeting.

1. to respond to a stimulus.
2. to enter into chemical action.

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Dansk (Danish)
v. intr. - reagere, modsætte sig, [kem.] reagere (med)

idioms:

• react against    modsætte sig, gå imod, reagere mod
• react with    [kem.] reagere med, gå i reaktion med

Nederlands (Dutch)
reageren, tegenaanval uitvoeren, dalen in waarde na stijging (aandelen)

Français (French)
v. intr. - réagir, (Chim) réagir

idioms:

• react against    réagir contre
• react with    (Chim) réagir (sur)

Deutsch (German)
v. - reagieren, zurückwirken

idioms:

• react against    sich widersetzen
• react with    reagieren mit

Ελληνική (Greek)
v. - αντιδρώ, ανταποκρίνομαι (σε ερέθισμα κ.λπ.)

idioms:

• react against    αντιδρώ κατά
• react with    αντιδρώ, προκαλώ χημική αντίδραση με

Italiano (Italian)
reagire

idioms:

• react against    reagire contro
• react with    reagire

Português (Portuguese)
v. - reagir, contra-atacar

idioms:

• react against    reagir contra
• react with    reagir

Русский (Russian)
реагировать, взаимодействовать

idioms:

• react against    реагировать на
• react with    взаимодействовать

Español (Spanish)
v. intr. - reaccionar

idioms:

• react against    reaccionar contra
• react with    reaccionar con

Svenska (Swedish)
v. - reagera

中文（简体）(Chinese (Simplified))
起反应, 反抗, 起作用

idioms:

• react against    反对, 反抗
• react with    对...起反应, 起化学作用, 反应

中文（繁體）(Chinese (Traditional))
v. intr. - 起反應, 反抗, 起作用

idioms:

• react against    反對, 反抗
• react with    對...起反應, 起化學作用, 反應

한국어 (Korean)
v. intr. - 반작용하다, 반대하다, 반응하다

idioms:

• react against    반발하다
• react with    ~으로 대응하다

日本語 (Japanese)
v. - 反応する, 反作用する, 反対する, 反動する, 逆行する, 反応させる

idioms:

• react against    反対する, 反抗する
• react with    と反応する

العربيه (Arabic)
‏(فعل) يؤثر, يستجيب, يكون رد فعل‏

עברית (Hebrew)
v. intr. - ‮הגיב (על), ענה, השפיע‬

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