invasión
/een-vah-syohn/
invasion

The military attack on a territory is known as an invasión (invasion).
invasión(noun)
invasion
?military or political attack
incursion
?a sudden, aggressive entry
,occupation
?taking control of a territory
📝 In Action
El presidente condenó la invasión del territorio vecino.
B1The president condemned the invasion of the neighboring territory.
La historia recuerda la invasión de 1944 como un momento crucial.
B2History remembers the 1944 invasion as a crucial moment.
💡 Grammar Points
Nouns ending in -sión
Almost all nouns in Spanish that end in -sión (like televisión, decisión, or confusión) are feminine, so they use 'la' or 'una'.
❌ Common Pitfalls
Gender confusion
Mistake: "El invasión"
Correction: La invasión. Remember the -sión rule usually signals a feminine word.
⭐ Usage Tips
Formal Contexts
This meaning is typically reserved for formal contexts, especially when discussing international relations, history, or law.

An unexpected and sudden flow of people or things is an invasión (influx).
invasión(noun)
influx
?a sudden flow of people or things
onslaught
?a fierce, destructive attack (figurative)
,flood
?a sudden overwhelming amount
📝 In Action
Tuvimos una invasión de mosquitos en la casa de campo este verano.
B2We had an invasion of mosquitoes at the country house this summer.
La nueva ley causó una invasión de privacidad.
C1The new law caused an invasion of privacy.
Siento una invasión de nostalgia cada vez que vuelvo aquí.
C1I feel a flood of nostalgia every time I come back here.
💡 Grammar Points
Using the preposition 'de'
When describing what is invading, you always use the preposition 'de' (of): 'una invasión de [something]'.
⭐ Usage Tips
Intensifier
This word is much stronger than 'lots of' or 'many'. It implies that the amount is excessive, difficult to handle, or unwelcome.
✏️ Quick Practice
💡 Quick Quiz: invasión
Question 1 of 1
Which sentence uses 'invasión' in its figurative, non-military sense?
📚 More Resources
Frequently Asked Questions
¿Cómo sé si un sustantivo es femenino si termina en -sión?
Nouns ending in the suffixes -sión, -ción, -dad, -tad, -tud, and -umbre are almost always feminine in Spanish. Just remember these patterns, and you'll correctly use 'la' or 'una' with them!
What is the difference between 'invasión' and 'ataque'?
An 'ataque' (attack) is usually a single violent action. An 'invasión' (invasion) is a sustained, large-scale, forceful entry into a territory or space, often implying occupation or a long-term presence.