-osis

a suffix occurring in nouns that denote actions, conditions, or states (hypnosis; leukocytosis; osmosis), especially disorders or abnormal states (chlorosis; neurofibromatosis; tuberculosis).
Compare -otic.

Origin of -osis

on the model of Greek borrowings ending in Greek -ōsis, as sklērōsis sclerosis, derived orig. from verbs ending in the formative -o- ( -ō- in noun derivatives), with the suffix -sis -sis

Words nearby -osis

-orexia, -orial, -oriented, -ory, -ose, -osis, -ota, -ote, -otic, -our, -ous

British Dictionary definitions for -osis

-osis

suffix forming nouns

indicating a process or state metamorphosis
indicating a diseased condition tuberculosis Compare -iasis
indicating the formation or development of something fibrosis

Word Origin for -osis

from Greek, suffix used to form nouns from verbs with infinitives in -oein or -oun

Medical definitions for -osis

-osis

suff.

Condition; process; action:osmosis.
Diseased or abnormal condition:proptosis.
Increase; formation:leukocytosis.

Scientific definitions for -osis

-osis

A suffix that means:
Diseased condition, as in tuberculosis.
Condition or process, as in osmosis.