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Definition of sclerosis noun from the Oxford Advanced Learner's Dictionary

sclerosis

noun
 
/skləˈrəʊsɪs/
 
/skləˈrəʊsɪs/
[uncountable] (medical)
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  1. a medical condition in which soft tissue in the body becomes hard see also amyotrophic lateral sclerosis, multiple sclerosis
    Word Originlate Middle English (originally denoting a hard external tumour): via medieval Latin from Greek sklērōsis, from sklēroun ‘harden’.
See sclerosis in the Oxford Advanced American Dictionary
Check pronunciation: sclerosis

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pity
noun
 
 
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