reacciono

Reacciono is the first-person singular present indicative form of the Spanish verb reaccionar, which means to react or respond to a stimulus, event, or situation. The verb belongs to the regular -ar conjugation class, and its present tense forms follow the standard pattern: yo reacciono, tú reaccionas, él/ella/usted reacciona, nosotros reaccionamos, vosotros reaccionáis, ellos/ellas/ustedes reaccionan.

Etymology and related forms: reaccionar derives from re- plus acción (action), with a meaning centered on responding to something with an action or response. The related noun reacción denotes the reaction itself, while the past participle is reaccionado. The past tense forms include reaccioné (preterite) or reaccionaba (imperfect), among others, and the subjunctive forms begin with reaccione.

Usage: Reaccionar is used across contexts to describe responses to physical, emotional, social, or cognitive stimuli. In everyday language it can refer to immediate emotional responses, as well as practical or behavioral responses to events. In scientific or medical discourse, it is common to discuss how a system or organism reacts to a stimulus, experiment, or treatment. It is important to distinguish reacciono from its homophone reaccionó (preterite, third-person singular) and from la noun reacción.

See also: reacción, reaccionar, reacciones químicas, reacción emocional.