Ilm

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: …

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

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, …

Olami Kabir va olami Sagir, mikrokosm va makro­kosm, talimoti falsafist, ki Insonu Kayhonro az jikhati sokhtu tarkib ba ham barobar karda, avvaliro zaminai andaryofti okhiri medonad. Ba manii vasetar talimotest oid ba yagonagi yo vahdati botinii sagiru kabir, mehinu kehin, juzvu kul. Aqidal aloqamandii mikro va makroolamho dar qari khoki …

Olami organiki, majmui organiamhoe, ki dar biosferai Zamin maskunand. Olami organiki az mikroorganizmho, rastaniho, hayvonot va odam, ki dar prosessi faoliyati khud ba yakdigar va tabiati gayrizinda tasir merasonand, tarkib yoftaast.

Olati Arifmetiki (OA), yake az olati asosii hisobmoshini raqa­mii elektronist (HRE), ki dar on bevosita amalhoi arifmetiki va mantiqi bar adadho ijro karda meshavand. Ijroi har guna amali arif­metiki yo mantiqi dar Olati Arifmetiki aslan az ijroi pay dar pai yak qator amalhoi elementari yo mikroamalho [muqarrar namudani «sifri»-i razryadhoi …

Oleg (vafot 912), knyazi Rusi Qa­dim. Bino ba malumoti solnomaho, kheshi Ryuriki nimafsonavi buda, badi vafoti u knyazi Novgorod shu­daast. Oleg soli 882 ba zamini krivichho yurish karda, shahri markazii onho — Smolenskro zabt namud. Oleg  shahri Lyubich, bad Kievro ishgol kar­da, ba poytakhti davlati khud tabdil dod. Solhoi 883—885 …

Oleum (az lotini oleum vitriol! — ravgani kuporos), H2S2O7, kislotai sulfati dudkunanda, mahluli angidridi sulfat S03 dar kislotai sulfati beob. Oleum moei ravgavmonandi berang buda, dar havoi nam dar natijai az tasiri bugi S0) va N2O hosilshavii qatrahoi H2S0, «dud» mekunad. Odatan Oleumi istehsolshavanda 18—20% va bazan to 60%< S03 …

Olefinho, alkenho, qatori gomologii karbogidridhoi noseri (formulai umumiashon Sp N2p) zanjirashon kushod, ki yak bandi duchandai karbon-karbon dorand. Olefinho ba payvasthoi asikli mansuband. Uzvi avvalini Olefinho etilen SN2=SN2 ast. Binobar in onhoro karbogidridhoi etileni niz menomand. Etilen va gomologhoi nazdiki on (propilen SNz = SN—SNz, butenho CJla, amplenho S5N10 va …

Oligofreniya (az oligo… va rgep — aql), guruhi bemorihoi modarzodi yo gayrimodarzodist, ki dar sinni kudaki dar natijai ba qadri kofi inkishof nayoftani aql ba vujud meoyad. Hangomi Oligofeniya, ba gayr az kaiaqli, aksar vaqt inkishof nayoftani qad, vayronshavii mutanosibii sokhti badan, sari vaqt ba balogat narasidan, ikhtiloli nutq, harakat, …