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.

Omili subektivi dar t a r i kh, faoliyati subekt — ommaho, sinfu partiyaho va ashkhosi judogonaro guyand, ki daraja va shaklhoi mukhtalif (ideologi, siyosi, tashkilotchigi)-ro darbar girifta, maqsadi asosii on tagyir va rivoj dodan yo mahfuz doshtani sharoithoi obektivii jamiyat meboshad. Kate­goriyai Omili subektivi bo kategoriyai omili  obektivi yo …

Omma (T— azhamravi), shikastani chumjumaro guyand, ki zarb to magzi cap rasida boshad.

Ommetr (az Om va …metr), asbobest baroi chen kardani muqovimati faoli (omii) elektri. Ommetr yakchand namud dorad; megaommetr, teraom­metr, mikroommetr. Ometrro bo andozagiraki magnitoelektri yo logometri magnitoelektri mesozand. Kori Ommetri magnitoelektri ba chen kardani quvvai jarayone asos yoftaast, ki hangomi doimi budani shiddati manba az muqovimati chenshavanda meguzarad. Az solhoi …

Omonimho (yun. yotbz — yakkhela va bputa — nom) , kalimahoe, ki az jihati talaffuz va sokht ba ham monand buda, manohoi gunogun dorand. Dar zabon yakchand rohi paydoishi Omonimho vujud dorad. Masalan, kalima­hoe ba yakdigar omonim meshavand, ki yagon umumiyati manoi nadorand: shast — raqam, shast — asbobi mohigiri, …