ellos incendiaron

set fire to, burned, caught fire

→ incendiar
incendi to set fire to, to ignite + aron 3rd-person plural preterite
verb · 3rd-person plural, past tense Rare #50,720
set fire to, burned Past-tense form used with plural subjects.
SP: Los vecinos incendiaron el campo.
EN: The neighbors set fire to the field.
caught fire Used with se: se incendiaron.
SP: Las hojas se incendiaron rápidamente.
EN: The leaves caught fire quickly.
Conjugation of incendiar
Indicative past
SingularPlural
Third incendió incendiaron

Incendiaron el traje AMP.

They set fire to the AMP suit.

— Avatar (2009)

Ellos incendiaron la casa del vecino en venganza.

They set the neighbor’s house on fire in revenge.

Diez casas se incendiaron.

Ten houses caught fire.

Ustedes son los que incendiaron los almacenes.

You are the ones who set fire to the warehouses.

— Brigadas rojas (2008)

Antes de irse sus hombres incendiaron la ciudad.

Before leaving, his men set the city on fire.