Ontario (Ontario), yake az kulhoi sistemai Kulhoi Buzurgi Ame­rikai Shimoli voqe dar, Shtathoi Muttahidai Amerika va Kanada. Qarib 310 kilometr darozi va to 90 kilometr bar dorad. Masohat 19,5 hazor kilometr* Chuquriash to 236 metr. Masohati havzaash qarib 90 hazor kilometr2. Ob az kulhoi dar bolo choygirifta ba vositai daryoi …

Operetta, (italyavi operetta — ope­rai khurd), asari musiqii sahnavist. Musiqii vokaliyu sozi, inchunin raqsu balet va unsurhoi sanati teatriro dar bar girifta, az imkoniyathoi dialog nisbat ba opera vasetar istifoda mebarad. Asosi drama­turgiyu musiqii Operetta, tarona va raqs ast. Dar Operetta, misli opera, az musiqii vokali va sozi — ariya, …

Ontogenez (az yunoni ontos — hasti va …genez), inkishofi fardii orga­nizm, majmui tabadduloti paydarhamii morfologi, fiziologi va biokhimiyaviro guyand, ki organizm az lahzai paydoish to dami marg az cap meguzaronad. Mafhumi Ontogenez yakjoya bo mafhumi filogenez du jihati az ham judona- shavandai jarayoni yagonai inkishofi tabiati zindaro ifoda mekunad. Dar …

Opistorkhoz, yak nav bemorist az guruhi gelmintaho, ki az on jigar va gadudi zeri meda illat meyoband. Dar Sibiri Garbi va mavzehoi nazdi Dnepr duchor mesha­vad. Barangezandaash kirmi makandai sibiri (Opisthorchis felineus) buda, dar jigar, zahradon va gadudi zeri medai odam, gurba, sag paraziti mekunad. Manbai asosii inva­ziya odam va …

Ontologiya (yunoni ontos — vujud va logiya), yak fasli falsafaro guyand, ki aslu asosi kulli, prinsipho tarkib va qonuniyati umumii hastiro tahqiq mekunad. Mohiyatan Ontologiya yak nav manzarai olamero ifoda mekunad, ki ba marifati voqeiyat muvofiq omada, dar sistemai kategoriyahoi falsafie, ki ba inu on davr va inchunin ananai falsafi …

Opoka, dar geologiya, jinsi kuhii tahshiniero guyand, ki mustahkami masomador ast. Asosan az duoksidi silisiyi amorfi (to 97%) va omekhtahoi gil, peg, glaukonit va gayra tarkib yoftaast. Rangash khokistarii ravshan va tira, bazan siyohtob. Khelhoi tozai Opoka khususiyati balandi adsorbsioni dorand. Opoka dar bahrho bo rohi khimiyavi hosil meshavad. Onro …

Onkhoserkoz, yak shakli bardavomi kasalii kichjagiest (gelmintoz), ki ba on asosan hayvonoti sumdor giriftor meshavand; kirmhoi parazitie az jinsi Onchocerca (lig. Filyariyaho) ba vujud meorand. Khele mamul ast. Onkhoserkoz ba chorvodori (makhsusan ba govu asp) zarar merasonad. Siroyati hayvonot dar charo- goh ba vositai hasharoti khunmake (khomushak, kharmagas) ba amal …

«Oppozitsiyai nav», guruhi fraksionii ziddpartiyaviest, ki dar dokhili VKP(b) soli 1925 bo sardori G. E. Zinovev va L. B. Kamenev dar zaminai platformai troskizm tashkiya yofta bud. «Oppozitsiyai nav» davo mekard, ki dar surati aqibmondagii tekhniki» mamlakat va mavjud nabudani revolyutsiyahoi proletari dar mamlakathoi mutaraqqii Evropa barpo namudani sotsializm dar …

Omuzishgohhoi kasbhoi tekhniki, muassisahoi hunaromuziest, ki az tamomkunandagoni sinfhoi 8-um va maktabkhoi miyona mutakhassisoni kasbhoi tekhniki tay­yor mekunand. Soli 1958 tasis yoftaand. Tamomkunandagoni sinfi 8 dar Omuzishgohhoi kasbhoi tekhniki malumoti miyona megirand kasbu hunar meomuzand va bad ba korkhonahoi sanoati rafta kor me­kunand. Omuzishgohhoi kasbhoi tekhniki shahri (GPTU) va qishloqi …

Oogoniy (az yunoni oop — tukhm va gone —tavallud), uzvi jinsii modina (gametantiya)-i aksari rastanihoi darajai pastro guyand. Dar Oogoniy yak va bazan yakchand (masalan, dar obsabzhoi buri siklosporagi) hujayratukhm hosil meshavad.