reactio

Latin

Etymology

From re- +‎ āctiō; compare reagō.

Noun

reāctiō f (genitive reāctiōnis); third declension

(Medieval Latin, New Latin) reaction
(New Latin, physics, chemistry) reaction

Declension

Third-declension noun.

Case	Singular	Plural
Nominative	reāctiō	reāctiōnēs
Genitive	reāctiōnis	reāctiōnum
Dative	reāctiōnī	reāctiōnibus
Accusative	reāctiōnem	reāctiōnēs
Ablative	reāctiōne	reāctiōnibus
Vocative	reāctiō	reāctiōnēs

Descendants

→ Catalan: reacció
→ English: reaction
→ French: réaction
→ German: Reaktion
→ Italian: reazione
→ Portuguese: reação
→ Russian: реакция (reakcija)
→ Spanish: reacción

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