• -ö-

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Adopted fromLatin-o-, originating ultimately fromAncient Greek-ο-(-o-).In English, the connective is found from the Middle English period in direct borrowings from Latin. Direct formations of English terms with the connective, always combining Greek or Latin roots, appear from the 16th or 17th century. From the 18th century, the suffix becomes productive in compounds where the second element is English. From about 1800, formations on all sorts of stems become common.

-o-

1. A linkingvowel insertedinterconsonantally between twomorphemes, to ease pronunciation, without contributing to the meaning. It frequently joins words orcombining forms ofAncient Greek orClassical Latin origin in theclassical compounds ofNew Latin andinternational scientific vocabulary, but it can also be used to join modern terms and even abbreviations, either formally or informally.

   extreme +-o- +-phile producingextremophile

   blog +-o- +-sphere producingblogosphere

   speed +-o- +meter producingspeedometer

   sadism +-o- +masochism producingsadomasochism

   smell +-o- +vision producingsmell-o-vision

• -i-

Designated in the USAN guidelines for non-proprietary names of monoclonal antibodies.

-o-

1. (pharmacology) amonoclonal antibody derived from amurine source

• -mab is the base suffix common to all monoclonal antibodies. (See that entry for full paradigm.)

• USP Dictionary of USAN and International Drug Names, U.S. Pharmacopeia, 2000

• “-o-”, inOneLook Dictionary Search.
• “-o-”, inMerriam-Webster Online Dictionary, Springfield, Mass.:Merriam-Webster, 1996–present.
• “-o-”, inThe American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.:Houghton Mifflin Harcourt,2016,→ISBN.
• “-o-” inTheFreeDictionary.com, Huntingdon Valley, Pa.: Farlex, Inc., 2003–2025.
• “-o-”, inOED Online⁠, Oxford:Oxford University Press, launched 2000.
• John A. Simpson andEdmund S. C. Weiner, editors (1989), “-o,suffix.”, inThe Oxford English Dictionary, 2nd edition, Oxford:Clarendon Press,→ISBN.

-o-

1. -o- (forms compounds)

Inherited fromOld Czech-o-, fromProto-Slavic*-o-.

-o-

1. forms compounds

-o-

1. -o-

• IPA^(key): /o/

-o-

1. -o-

• Audio:

  (file)

-o-

1. -o-

• IPA^(key): [o]

-o-

1. Asuffix-initialvowel (orlinkingvowel) insertedinterconsonantally between the word stem and the suffix, to ease pronunciation, without contributing to the meaning.

   ‎kor(“age”) + ‎-o- + -k → ‎korok(“ages”)

Inherited fromProto-Slavic*-o-. CompareSlovincian-ô-

• IPA^(key): /-ɔ-/

-o-

1. used to link two words in some compounds;-o-

Adopted from the thematic vowel inAncient Greek-ο-(-o-), often used to form nominal compounds. In Ancient Greek, the connective suffix originates in compounds where the first member is thematic, such asδημοκρατία(dēmokratía), but was extended by analogy to other stems, such asμητρόπολις(mētrópolis). The suffix was borrowed as a connective into Latin, mainly in compounds of Greek origin.

The suffix becomes productive and forms new compounds in learned humanist Latin, from the Renaissance. The connective is especially productive in connecting ethnonyms or geographical terms; genuine Greek stems includeGallo-, andSyro-, but most are of medieval or modern origin, productive from the 15th century, such asAnglo-,Graeco- orLatino-.

-o-

1. (post-classical Latin)Suffix forming nominal compounds (such asanglosaxonicus(“Anglo-Saxon”), fromAnglus(“Angle, English”) andsaxonicus(“Saxon”)).

Inherited fromProto-Slavic*-o-.

• IPA^(key): (10^th–15^th CE)/ɔ/
• IPA^(key): (15^th CE)/ɔ/

-o-

1. used in compound words

• Polish:-o-
• Silesian:-o-

Inherited fromOld Polish-o-.

• IPA^(key): /ɔ/

• Audio:

  (file)

• Rhymes:-ɔ
• Syllabification:[please specify syllabification manually]
• Homophones:o,o-,-o

-o-

1. used in compound words

   ‎deszcz + ‎-o- + ‎mierzyć → ‎deszczomierz

• -i-,-u-,-y-

-o-

1. -o-

Inherited fromProto-Slavic*-o-

-o- (Cyrillic spelling-о-)

1. Interfix used for forming nominal compounds.

   kiš +-o- +-bran →kȉšobrān

Inherited fromProto-Slavic*-o-

-o-

1. Used to form compounds.

Inherited fromProto-Slavic*-o-

-o-

1. Used to form compounds.

-o-

1. infixed form of-o(“wa class_(II),m class_(III), andu class_(XI)relative marker”)

FromOld Swedish-u,-o, from the Old Swedishgenitive form of Germanic feminineōn-stems.

Alternates with-u- according to Old Swedish rules ofsyllable weight, where-o was used after heavy syllables and-u after light.

-o-

1. Genitival interfix used to link elements in some compounds.

• Used as interfix in compounds with certain old weak feminines ending in-a. Some common ones arehälsa(“health”), e.g.hälsocentral(“health center”);kvinna(“woman”), e.g.kvinnoorganisation(“women's organisation”);känsla(“feeling”), e.g.känsloliv(“emotional life”);vecka(“week”), e.g.veckodag(“day of the week”);vila(“rest”), e.g.vilopuls(“resting heart rate”);lära(“teaching, theory”), e.g.läromedel(“teaching aids”);föda(“food, diet”), e.g.födoämne(“foodstuff”);människa(“human”), e.g.människovärde(“human dignity”);saga(“tale”), e.g.sagobok(“storybook”), etc.
• Alternates with a zero interfix (vowel deletion) in some words, cf.kyrkogård(“churchyard”), butkyrktorn(“church tower”);kronofogde(“enforcement officer”), butkronblad(“petal”).
• The interfix was formerly mostly confined to the written literary language, whereas the spoken colloquial language preferred compounds with no-o- or with-e- in some dialects, but forms with-o- are now common in the spoken language, and formerly colloquial pronunciations such askörrgård forkyrkogård are today less common.