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rarefy

rar·e·fy

rarefy

 
pronunciation:
reI rih faI
parts of speech:
transitive verb, intransitive verb
part of speech: transitive verb
inflections: rarefied, rarefies, rarefying
definition 1: to make purer; refine.
synonyms:
clarify, clear, fine, purge, purify, refine
similar words:
clean, filter, rectify, sanitize, sterilize
definition 2: to make rarer or less dense.
The air is rarefied at this high altitude.
synonyms:
attenuate, thin
similar words:
dilute, diminish, reduce, sublimate, weaken
 
part of speech: intransitive verb
definition 1: to become purer.
synonyms:
clear, purge, purify
definition 2: to become thin or less dense.
synonyms:
attenuate, thin
similar words:
dilute, diminish, weaken