descompresionar

A rare, largely archaic or specialized variant of the standard descomprimir (to decompress) — dictionaries note it survives mainly in older or specialized (including legal) usage. Descomprimir is the form used in virtually every modern context, technical or everyday.

• Algunos textos legales antiguos usan descompresionar en vez de descomprimir. — Some old legal texts use descompresionar instead of descomprimir.
• Hoy casi nadie diría descompresionar un archivo. — Today almost nobody would say descompresionar a file.
• El diccionario lo marca como una variante poco usada. — The dictionary marks it as a rarely used variant.

Don't use it in place of descomprimir in everyday or technical Spanish — it will sound archaic or simply wrong to most speakers.

Often confused with descomprimir.