How to Say "extension" in Spanish
The most common Spanish word for “extension” is “extensión” — use this word when referring to the physical size or reach of something, like land, or for technical terms like telephone extensions or file types..
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extensión
nounA2general
Use this word when referring to the physical size or reach of something, like land, or for technical terms like telephone extensions or file types.
Examples
La extensión del terreno es de mil metros cuadrados.
The size of the land is one thousand square meters.
ampliación
nounB1general
Choose this word when you mean the act of making something larger, such as adding space to a building or increasing the size of a photograph.
Examples
Necesito una ampliación de esta fotografía para el salón.
I need an enlargement of this photo for the living room.
renovación
nounA2general
Use this word specifically when you are talking about renewing a service, a contract, or an official document that has expired or is about to expire.
Examples
He solicitado la renovación de mi pasaporte.
I have applied for my passport renewal.
Extensión vs. Ampliación
Learners often confuse 'extensión' and 'ampliación' when talking about making something bigger. Remember that 'extensión' usually refers to inherent size or reach, while 'ampliación' implies an active process of making something larger, like a physical addition or a photo enlargement.
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