Omojgoh, maydoni talimu mashqi tirandozon. Bari Omojgoh ba hisobi miyona taqriban 1-2 kilometr, daroziash to 5—10 kilometr meshavad. Omojgoh durtar aa joyhoi aholinishin, rohhoi shosse, ohan, daryohoi kishtigard, rohhoi havoi va gayra sokhta meshavad.

Olmalik, shahrest dar viloyati Toshkenti Respublikai Sovetii Sotsialistii Uzbekiston.  Dar nishebii shimoli qatorkuhi Qurama va sohili chapi daryoi Ohangaron, 18 kilometr janubtari stansiyai rohi ohan Ohangaron joygir shudaast. Punk­ti okhirini rohi avtomobilgardi Toshkent — Olmaato (68 kilometr) meboshad. Aholiash 101 hazor nafar (1979). Olmaato markazi metallurgiyai rangai Respublikai Sovetii Sotsialistii …

Omsk, shahr, markazi viloyati Omski Respublikai Sovetii Federativii Sotsialisti Rossiya. Dar nazdi andarobi daryohoi Om va Irtish voqe gardidaast. Bandari kaloni daryoi Irtish va uzeli rohi ohan dar magistrali Transsibir. Aeroport dorad. Aholiash 1014 hazor nafar (1979). Az jihati shumorai aholi va masohat Omsk (bad az Novo­sibirsk) shahri duyumi Sibir …

Oloishi radioaktivii bio­sfera, ba organizmhoi zinda va muhiti zisti onho (atmosfera, gid­rosfera, khok) dokhil shudani moddahoi radioaktiviro guyand, ki dar natijai tarkishhoi yadroi, ba muhiti atrof partoftani partovhoi radioaktivi va gayra ba vujud meoyad. Oloishi radioaktiii az tasiri mahsuloti taqsimshavii yadroho (*°Sr, ,87Sg, 144Cl), nuklidhoi radioaktivi (EN, 24Na, 59Ge, “Go), …

Olusi, nigared Ahvali.

Olviya, shahr— davlati atiqai gulomdoriest, ki dar so­hili rosti limani Bug voqe bud; nomi digarash Borisfen (az nomi yunonii daryoi Dnepr). Dimnai Olviya nazdi dehai hozirai Parutinoi rayoni Ochakovi viloyati Nikolaev voqe ast. Avvali asri 6 to milod yunoniyoni shahri Milet asos guzoshtaand. Zaminhoi har du sohili Bug va bisyor …

Olster (Ulster), 1) viloyati tarikhi dar qismi shimoli jazirai Ir­landiya. Az nimai duyumi asri 12 tobei Angliya. Asrhoi 16—18 markazi shurishhoi ziddimustamlikadori gardid. Barobari taraqqiyoti kapita­lizm dar Irlandiya sanoati Olster niz zud rivoj yoft. Konservatorhoi anglis az nizohoi milli va dini (bayni katolikhoyu protestantho) istifoda burda, solhoi Jangi yakumi jahoni …

Oli Nematkhoni Sherozi (takhallus; nomash Mirzomuhammadi Nuruddin; tavallud bayni 1630—40, Dehli — vafot 1710), shoiri forsizaboni Hinduston. Az oilai tabib Hakim Muhammad Fathuddin. Oli dar javoni bo padarash ba Sheroz safar karda, hamon jo malumoti ibtidoi girif­ta, ba kamol merasad va dar zamoni hukmronii Shohijahon boz ba Hinduston bargashta, ba …

Om, vohidi muqovimati elektriest dar Sistemoy vohidhoi baynalxalqi. Ba sharafi olimi nemis G. S. Om nomida shudaast. Ishoratash Om. Om muqovimati noqilest, ki hangomi ba 1 Amper barobar budani quvvai jarayon bayni nughoi on 1 Volt shiddat ba vujud meoyad. Tanosubi bayni Om va digar vohidhoi muqovimati elekt­ri chunin ast: …

Omada, dehaest dar Soveti qishloqi Chuzii payoni Hisori Respublikai Sovetii Sotsialistii Tojikiston. Territoriyai kolkhozi «Leningrad». Az Omada to markazi Soveti  qishloq 4 kilometr, to rayon 28 kilometr; roh asfaltpush. Aholiash 600 nafar (1981), tojikon. Sohai asosii khojagi pakhtakori. Zaminho az daryoi Qarotog obyo­ri meshavand.