irruption

• Nom désignant une intrusion soudaine, brutale ou rapide, une augmentation ou une apparition soudaine, souvent utilisé en écologie ou dans un contexte général pour décrire un changement rapide ou un afflux.

A noun referring to a sudden, violent, or abrupt entry, increase, or occurrence, often used in ecological or general contexts to describe a rapid change or influx.

1. Sudden violent entranceC1formal

   A sudden, forceful, or violent entry into a place or situation.

   Irruption

   • The irruption of the crowd into the building caused chaos.
   • The police prepared for an irruption of protesters into the square.
   • The sudden irruption of the storm disrupted the outdoor event.

   Synonymesforayincursioninrushintrusioninvasionpenetrationraid

2. Population increaseC2formalscientific

   A sudden, sharp increase in the number of individuals in a population, often in ecology.

   Irruption démographique

   • The irruption of the locust population devastated the crops.
   • Ecologists studied the irruption of the rabbit species in the region.
   • An irruption of birds was observed after the mild winter.

   Synonymesboomoutbreakproliferation

3. Sudden occurrence of undesirable conditionC1formal

   A sudden, violent, and often spontaneous occurrence of something negative.

   Survenue soudaine d'une condition indésirable

   • The irruption of violence in the city was unexpected.
   • An irruption of disease swept through the community.
   • The irruption of panic among the crowd was immediate.

   Synonymeseruptionflare-upoutbreakoutburstupsurge