Longman Dictionary of Contemporary English homepage

Language: Latin
Origin: Greek

-osis

 suffix
     
Related topics: Illness and Disability
-osis plural -oses [in nouns]
1MI a diseased condition:
silicosis (=a lung disease)
neuroses (=medical conditions that affect the mind)
2 a condition or process:
a metamorphosis (=change from one state to another)
—-otic suffix [in adjectives]
neurotic
hypnotic
—-otically suffix [in adverbs]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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