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- pronunciation:
- k
 m
pre
shn
| part of speech: |
noun |
| definition 1: |
the act or process of pressing down on or together, causing flattening or condensing.
The underlying layers of rock were flattened by compression.- similar words:
- abridgment
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| definition 2: |
the state or result of being compressed.
- similar words:
- abbreviation, abridgment
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| definition 3: |
the reduction in volume and increase in pressure of air or air mixed with fuel in the cylinder of an internal combustion engine prior to ignition, or the engine cycle in which this process takes place.
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| related words: |
abbreviation, contraction, press |
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| derivation: |
compressional (adj.) |
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