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COMPRESSION
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I. (noun)
Sense 1
Meaning:
Applying pressure
Synonyms:
Classified under:
Nouns denoting acts or actions
Hypernyms ("compression" is a kind of...):
press; pressing; pressure (the act of pressing; the exertion of pressure)
Hyponyms (each of the following is a kind of "compression"):
squeeze; squeezing (the act of gripping and pressing firmly)
condensation; condensing (the act of increasing the density of something)
compaction; crunch; crush (the act of crushing)
constriction (the action or process of compressing)
Antonym:
decompression (relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure))
Derivation:
compress (squeeze or press together)
Sense 2
Meaning:
Encoding information while reducing the bandwidth or bits required
Classified under:
Nouns denoting acts or actions
Hypernyms ("compression" is a kind of...):
encoding; encryption (the activity of converting data or information into code)
Hyponyms (each of the following is a kind of "compression"):
image compression (the compression of graphics for storage or transmission)
MPEG (a set of standards adopted by the moving pictures experts group for the compression of digital video and audio data or a file of data compressed according to those standards)
Antonym:
decompression (restoring compressed information to its normal form for use or display)
Derivation:
compress (make more compact by or as if by pressing)
Sense 3
Meaning:
The process or result of becoming smaller or pressed together
Example:
the contraction of a gas on cooling
Synonyms:
compression; condensation; contraction
Classified under:
Hypernyms ("compression" is a kind of...):
shrinkage; shrinking (process or result of becoming less or smaller)
Hyponyms (each of the following is a kind of "compression"):
coarctation; constriction (tight or narrow compression)
Derivation:
compress (squeeze or press together)
Sense 4
Meaning:
An increase in the density of something
Synonyms:
compaction; compression; concretion; densification
Classified under:
Nouns denoting natural events
Hypernyms ("compression" is a kind of...):
concentration (increase in density)
Context examples:
A small sterile solid mass consisting of a highly purified drug (with or without excipients) made by the formation of granules, or by compression and molding.
(Pellet Dosage Form, NCI Thesaurus/CDISC)
A condition referring to irritation or compression of the proximal sciatic nerve, secondary to contraction of the piriformis muscle.
(Piriformis Muscle Syndrome, NCI Thesaurus)
Pituitary mass lesions may also produce compression of the OPTIC CHIASM and other adjacent structures.
(Pituitary Gland Disorder, NLM, Medical Subject Headings)
Larger tumors usually produce symptoms related to compression of the adjacent structures.
(Pancreatic Non-Invasive Mucinous Cystadenocarcinoma, NCI Thesaurus)
Signs and symptoms result from the compression of nerve roots and include motor and sensory disturbances in the lower and upper extremities, and pain in the neck and arms.
(Ossification of Posterior Longitudinal Ligament, NCI Thesaurus)
Large tumors may cause spinal cord compression.
(Nerve Root Neoplasm, NCI Thesaurus)
GLAUCOMA, ISCHEMIA, inflammation, a chronic elevation of intracranial pressure, toxins, optic nerve compression, and inherited conditions (see OPTIC ATROPHIES, HEREDITARY) are relatively common causes of this condition.
(Optic Atrophy, NLM, Medical Subject Headings)
An ultrasound-based imaging technique used to examine the stiffness or elasticity of a tissue by applying mechanical compression or vibration to the tissue being imaged.
(Elastography, NCI Thesaurus)
Acute compression of the heart caused by increased intrapericardial pressure due to the collection of blood or fluid in the pericardium from rupture of the heart, penetrating trauma, or progressive effusion.
(Cardiac Tamponade, NCI Thesaurus)
A pump designed to facilitate the movement or compression of air.
(Compressor Air Pump Device Component, NCI Thesaurus)
