-osis (noun) Definition, Meaning & Examples

  1. a suffix occurring in nouns that denote actions, conditions, or states (hypnosis; leukocytosis; osmosis), especially disorders or abnormal states (chlorosis; neurofibromatosis; tuberculosis).
suffix forming nouns
  1. indicating a process or state
  2. indicating a diseased condition
  3. indicating the formation or development of something
    -osis (noun) Definition, Meaning & Examples

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