a suffix occurring in nouns that denote actions, conditions, or states (hypnosis; leukocytosis; osmosis), esp. disorders or abnormal states (chlorosis; neurofibromatosis; tuberculosis). Cf. -otic.
[on the model of Gk borrowings ending in Gk -osis, as sklerosis SCLEROSIS, derived orig. from verbs ending in the formative -o- (-o- in n. derivatives), with the suffix -sis -SIS]

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Universalium. 2010.

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