Onho ijroiya va amrdihanda, dar davlathoi sotsialisti muassisahoi mamuriest, ki ba­roi ijroi vazifahoi idorakunii korhoi davlati vakolati hukumati dorand. Organ az tarafi Sovetho tash­kil karda meshavand. Onho ijroi qonunhoro tashkil, korhoi davlatiro idora mekunand, faoliyati amrdihii  khudro baroi halli masalahoi konkreti ba amal mebarorand. Az in  ru, onhoro organhoi ijroiya …

Opera (ital. opera, aynan — talif az lotini opera — mehnat, masnuot, asar), janri sanati musiqi-dramaviest. Asosi Opera— libretto dar in janr bo vositahoi dramaturgiyai musiqi, pesh az hama, tavassuti musiqii vokali (ovozi) tajassumkunanda meshavad. Opera hamchun janri murakkab dar khud namudhoi gunoguni sanoe: dramaturgiya, musiqi, sanati tasviri, khoreografiya va …

Onega, khalich dar qismi janubi bahri Safed. Tulash 185 kilometr, barash 50—100 kilometr; chuquriash to 36 metr. Jazirahoyash bisyorand (kalontarini onho jazirai Boloveskiy). Zimiston yakh mebandad. Dar sohili garbi, dar nazdikii shahri Belomorsk kanali Bahri Safedu Baltika bo bahri Safed payvast meshavad. Ba Onega daryohoi Onega, Kem, Vig merezand. Bandarhoyash: …

Operator, mafhumi matematikiest, ki ba manoi vase muvofiqati elementhoi du majmu X va U-ro ifoda mekunad, yanie bar har yak elementi kh i majmui X i on elemen­ti u-i majmui U-ro muvofiq meguzorad. Ba (mafhumkhri amal, inikos, tabdilot, funksiya, hammanost. Elementi u-ro obrazi elementi kh, kh-ro proobraz (timsol)-i u menomand. …

Oratoriya (lotini oratoreum — ibodatgoh), asari kaloni «musiqiest, ki odatan doroi syujeti dramavi buda, baroi saroyandagon (soliston), khor va orkestr ejod meshavad. Oratoriya bo kantata qarobat dorad, vale az on bo hajm, khususiyati epikiyu dramavi va syujet farq mekunad. Oratoriya dar asrhoi 16—17 dar Italiya paydo shudaast. Ba tashakkuli Oratoriya …

«Orbita», nomi shartii stansiyahoi ruizaminii aloqai kayhoni, ki dar territoriyai SSSR sistemai yagonaro tashkil medihand; tavassuti radifoni aloqai «Molniya» baroi ret­ranslyatsiyai minbada barnomahoi monokhromi (siyohu safed) va rangai televizioni markaziro irsol va qabul mekunad. Avvalin 20 stansiyai in sistema soli1967 ba kor cap kardand va soli 1982 shumorai onho qarib …

Oprichnina, oprishnina (az rusii qadim oprichniy —makhsus), sistemai chorabnnihoi favquloddai harbiyu mamuri va ijtimoiyu iqtisodii podshoh Ivani IV (Groz­niy) baroi mustahkam namudani hokimiyati mutlaqiyati markazonida shuda va barham dodani parokandagii feodali. Ivani IV barham zadani «oshubho»-ro maqsadi asosii Oprichnina medonist. Barobari jori kardani Oprichnina jazoi berahmonai oppozisiyai boyarhoyu knyazho va …

Orbeliane Sulkhan Sabo (4. 11. 1658, dehai Tandzia, hozira rayoni Bolnisii Respublikai Sovetii Sotsialistii Gurjiston— 6. 2. 1725, Moskva), navisanda, olim va hodimi siyosii gurji. Dar oilai qozikaloni Kartli ba dunyo omadaast. Tarafdori hokimi mutlaqi bomarifat bud. Baroi najot dodani Gurjiston az zulmu istibdodi achnabiyon muboriza burdaast. Badi az eroniyon …

Optika (yunoni optike — ilm dar boram idroki bosiri, az optos — namoyon), yak fasli fizikaro guyand, ki dar on tabiati afkakishi optiki (rushnoy), pakhnoishi on dar muhithoi gunoguni fiziki va hodisahoe, ki hangomi tasiri mutaqobili rushnoi va modda ba amal meoyand, omukhta meshavand. Afkanishoti op­tiki yake az namudhoi mavjhoi …

Organ (yun. organon — olot, asbob), asbobi musiqii klavishdori qadimai yunoniyonro guyand. Organ dar Tojikiston ham dast. On dar tolori konsertii Instituti davlatii sanati Tojikiston ba nomi Mirzo Tursunzoda nasb shudaast (1978). In Organro fir­mai «Riger-kloss»-i Chekhoslavakiya sokhtaast. On doroi 2 manual va 29 registr buda, trakturaash mekhanikist. Nigared.  niz …