-osis

Learned borrowing from New Latin -ōsis, from Ancient Greek -ωσις (-ōsis, “state, abnormal condition, or action”), from -όω (-óō) stem verbs + -σις (-sis).^[1][2]

• (Received Pronunciation) IPA^(key): /-əʊ.sɪs/
• (General American, Canada) IPA^(key): /-oʊ.sɪs/
• (General Australian) IPA^(key): /-əʉ.sɪs/
• Rhymes: -əʊsɪs

-osis (noun-forming suffix, plural oses)

1. (pathology) functional disease or condition such as hepatosis
2. process, action such as phagocytosis
3. formation, increase such as leukocytosis

Corresponding adjectives are formed using -otic.

• -exia
• -iasis
• -itis
• -otic
• Template:Helminthiases (Infectious · Parasitic disease)

• ISOs, isos, ossi-, sois

Borrowed from English -osis, French -ose, Italian -ose, Portuguese -ose/Spanish -osis, Russian -оз (-oz), all ultimately via Latin from Ancient Greek -ωσις (-ōsis).

• IPA^(key): /ˈosis/, /ˈozis/

1=n

-osis

1. (pathology) forms nouns from nouns, denoting functional disease or condition; -itis

   ‎neuro- (“neuro- (“nerve”)”) + ‎-osis → ‎neurosis (“neurosis”)

   ‎tuberculo (“tubercle”) + ‎-osis → ‎tuberculosis (“tuberculosis”)

   ‎halito (“breath”) + ‎-osis → ‎halitosis (“halitosis”)

• A corresponding adjectival suffix is -otic.

• Alexander Gode; Hugh E. Blair (1955), Interlingua: A Grammar of the International Language, →ISBN

From Ancient Greek -ωσις (-ōsis, “state, abnormal condition, or action”), from -όω (-óō) stem verbs + -σις (-sis). This suffix was already found in Classical Latin terms borrowed from Ancient Greek (e.g. metamorphōsis, from Ancient Greek μεταμόρφωσις (metamórphōsis), itself from μετᾰμορφόω (metămorphóō) +‎ -σῐς (-sĭs)).

-ōsis f (genitive -ōsis or -ōseōs or -ōsios); third declension

1. (New Latin, pathology) -osis

   ‎tūberculum (“tubercle”) + ‎-ōsis → ‎tūberculōsis (“tuberculosis”)

Third-declension noun (Greek-type, i-stem).

¹Found sometimes in Medieval and New Latin.

• -ōticus (“-otic”)

See the etymology of the corresponding lemma form.

-ōsīs

1. dative/ablative masculine/feminine/neuter plural of -ōsus

-osis f (noun-forming suffix, plural -osis)

1. (pathology) -osis

• “-osis”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025

-osis f

1. (especially pathology) -osis