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To respond to a stimulus, event, or situation, often emotionally or physically.
Les enfants réagissent vite aux bruits forts.
Children react quickly to loud noises.
The verb 'réagir' is often used to describe emotional or physical responses to external stimuli.
To respond to a chemical or biological stimulus, often in a scientific or medical context.
Le corps réagit aux allergènes en produisant des anticorps.
The body reacts to allergens by producing antibodies.
In medical contexts, 'réagir' can describe physiological responses to substances or conditions.
'Réagir' is often followed by the preposition 'à' when referring to a stimulus or event.
Use 'à' after 'réagir' when referring to a specific stimulus or event.
From the Latin 're-' (back) and 'agere' (to act), meaning 'to act back' or 'to respond'.
'Réagir' is commonly used in everyday language to describe emotional or physical responses. In scientific contexts, it can refer to chemical or biological reactions.