compression

compression de données

Opération qui permet aux fichiers informatiques d’occuper moins d’espace de stockage.

En anglais simple : The process of making computer files use less storage space.

• Compression makes the file smaller.
• Too much image compression can reduce picture quality.
• Does this software support video compression?

Synonymes : data reduction

Expressions courantes : data compression, file compression, image compression

compression

Action de presser quelque chose pour lui faire occuper moins de place.

En anglais simple : The process of pressing something into a smaller space.

• The foam changes shape under compression.
• Compression of air produces heat.
• This material returns to its original shape after compression.

Comment l'utiliser : compression of something (Compression of the gas raises its temperature.)

Synonymes : compaction, squeezing

Contraires : expansion

Expressions courantes : compression of something, under compression, air compression

compression

Phase où un moteur comprime le mélange d’air et de carburant avant de le brûler.

En anglais simple : The stage when an engine squeezes its fuel and air mixture before burning it.

• Both valves close during compression.
• The piston moves upward on the compression stroke.
• Compression prepares the fuel mixture for burning.

Expressions courantes : compression stroke, during compression, engine compression