-osis

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

-osis

suffix forming nouns

1. indicating a process or state

   metamorphosis

2. indicating a diseased condition Compare -iasis

   tuberculosis

3. indicating the formation or development of something

   fibrosis

–osis

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

Word History and Origins

Origin of -osis¹

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

Word History and Origins

Origin of -osis¹

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

Example Sentences

Fort Stevens State Park Ranger Dane Osis, who leads regular wild mushroom hikes through the park, has called the Oregon Coast one of the best places to hunt for mushrooms, especially for edible varieties.

From Washington Times

Fort Stevens State Park Ranger Dane Osis, who leads regular wild mushroom hikes through the park, has called the Oregon Coast one of the best places to hunt for mushrooms, especially for edible varieties.

From Seattle Times

Near to the Martyrdom of St. Andrew hang the Visi�n de San Basilio and the Apot�osis of San Hermenegildo, two works of great size, by Herrera el Viego.

From Project Gutenberg

In the centre is, La Apot�osis de Santo Tom�s de Aquino, considered by some critics the masterpiece of Zurbaran.

From Project Gutenberg

But another flatterer, by name Osis, caused Thraso to be put to death by Hieronymus; and he persuaded Hieronymus himself to assume the diadem, and the purple and all the rest of the royal apparel, which Dionysius the tyrant was accustomed to wear.

From Project Gutenberg