compression
pressing to make smaller or denser
The act of pushing or squeezing something so it takes up less space or becomes more solid.
compression of [something]
- The compression of the gas caused its temperature to rise.
- Over time, the compression of the soil made the ground hard and difficult to dig.
- The material is designed to spring back after compression.
- Engineers tested how much compression the metal bar could withstand before it bent.
- The foam mattress slowly returned to its original shape after compression.
- The compression of the sponge made it very thin.
- Air gets hot when it is under strong compression.
- This metal can resist a lot of compression.
- Compression of the ground made the road sink a little.
making information short and dense
The act of saying or showing a lot of information in only a few words or in a small space.
compression of [information/text/events]
- The film is a clever compression of the 600-page novel into two hours.
- Good headlines are a form of extreme linguistic compression.
- His talk was an impressive compression of decades of research.
- The editor asked for greater compression in the opening chapter.
- Poetry often relies on compression to create powerful images with few words.
- This short book is a compression of many long reports.
- The teacher liked the compression of ideas in her summary.
- A news headline is a compression of the full story.
- Good notes use compression so they are short but clear.
medical pressure on body tissue
Strong, steady pressure put on part of the body to stop bleeding, reduce swelling, or give support.
apply compression to [a body part]
- Apply firm compression to the wound until the ambulance arrives.
- Compression can help reduce swelling after a sprained ankle.
- The doctor recommended compression therapy for her varicose veins.
- He wore a knee sleeve that provided gentle compression during his run.
- The nurse adjusted the bandage to maintain even compression on the arm.
- You should put compression on the cut to stop the blood.
- The doctor used compression to slow the bleeding.
- Compression and ice can help after you hurt your knee.
- She wears compression on her legs to help her veins.
reducing digital file size
A way of making a computer file smaller so it uses less space or sends faster, while still working correctly.
compression of [data/files/images]
- Better compression means you can store more photos on your phone.
- The software uses lossless compression for text files.
- Strong video compression allows movies to stream smoothly on slow connections.
- They adjusted the compression settings to balance image quality and file size.
- The backup system performs automatic compression before uploading your files.
- Compression makes the file smaller.
- We use compression so the video will load faster.
- This app can do strong compression of images.
- After compression, the photo took up less space.
reducing audio dynamic range
In sound work, a way to make quiet and loud sounds closer in volume so the sound is more even.
compression on [vocals/instruments/audio track]
- A bit of compression on the vocals makes them sit better in the mix.
- Too much compression can make the music sound flat and lifeless.
- The podcast uses gentle compression so voices stay at a steady level.
- Engineers adjusted the compression settings to tame peaks in the recording.
- Broadcast audio often uses strong compression to keep volume consistent.
- Compression makes the singer’s voice sound more even.
- With heavy compression, the music can lose feeling.
- They added compression to the guitar track.
- Good compression helps people hear every word clearly.
increasing pressure in engine cylinders
In a car or other engine, the step where the piston pushes the fuel and air into a smaller space to raise the pressure before it burns.
compression in [an engine/cylinder]
- Low compression in one cylinder can cause an engine to misfire.
- High compression engines usually produce more power but need better fuel.
- The mechanic ran a test to check the engine’s compression.
- During the compression stroke, the piston moves upward in the cylinder.
- A leak in the gasket led to a loss of compression.
- The car has a problem with engine compression.
- High compression can give an engine more power.
- The mechanic did a compression test on the motor.
- Bad compression can make the engine hard to start.
- Base: compression
- Plural: compression, compressions
chest compression
1pressing on the chest in CPR
Hard, fast pushes on a person’s chest to move blood when their heart has stopped, as part of CPR.
- Start chest compressions immediately if the person is not breathing.
- Proper chest compression depth is important for effective CPR.
- They practiced chest compressions on a training dummy.
compression bandage
1bandage that applies pressure
A bandage that is wrapped tightly to press on an injury to stop bleeding or reduce swelling.
- The nurse applied a compression bandage to his ankle.
- Use a compression bandage after the ice pack.
- A proper compression bandage can help a sprain heal faster.
compression garment
1tight clothing that gives support
Tight clothing, like shorts, shirts, or sleeves, that presses on the body to give support or help blood flow.
- Athletes often wear a compression garment during training.
- The surgeon advised her to use a compression garment after the operation.
- He bought a compression garment to support his lower back.
compression ratio
1ratio of original to compressed size
A number that shows how much something has been made smaller by compression, by comparing before and after sizes.
- This codec achieves a high compression ratio on video files.
- The engine’s compression ratio affects its power and efficiency.
- A better compression ratio means more data in less space.
compression socks
1tight socks for leg support
Special tight socks that squeeze the legs gently to help blood move and to stop swelling.
- She wears compression socks on long flights to prevent swelling.
- The doctor recommended compression socks for his circulation problems.
- Runners often use compression socks for extra support.
compression spring
1spring that works by being squeezed
A metal coil that is pushed shorter and then pushes back to its normal shape when you let go.
- The pen uses a small compression spring inside the barrel.
- Engineers selected a stronger compression spring for the new design.
- A broken compression spring caused the machine to fail.
data compression
1reducing the size of digital data
A method that makes digital information smaller so it takes less space or sends faster, but can still be used.
- Modern video services rely heavily on data compression.
- Good data compression lets you store more files on the same drive.
- The engineer specializes in data compression algorithms.
file compression
1making computer files smaller
The act of making computer files smaller so they use less disk space or are easier to send.
- Use file compression before emailing large attachments.
- The backup software includes automatic file compression.
- File compression can make archives much easier to manage.
image compression
1reducing digital image file size
A way of making picture files smaller so they load faster or use less space, sometimes with lower quality.
- Heavy image compression can cause visible artifacts.
- Web designers often use image compression to improve page speed.
- Adjust the image compression level to balance quality and size.
lossless compression
1reversible data compression without loss
A type of compression where, after you decompress the file, you get exactly the same data as before, with nothing lost.
- Text files usually use lossless compression.
- Choose lossless compression if you need perfect image quality.
- The program supports both lossy and lossless compression methods.
lossy compression
1irreversible compression that loses data
A type of compression that makes files smaller by throwing away some details, so you cannot get the exact original file back.
- Most streaming music uses lossy compression.
- Heavy lossy compression can make images look blurry.
- They reduced the file size with strong lossy compression.
compression fracture
1bone fracture from being crushed
A type of broken bone where the bone is squeezed and crushed, often in the spine.
- The elderly patient suffered a compression fracture in her lower spine.
- Osteoporosis can lead to compression fractures in the spine.
- Osteoporosis increases the risk of compression fractures.
- The fall caused a compression fracture of one of his vertebrae.
- He wore a brace while his compression fracture healed.