Osmos (yunoni osmos — takoy, fishor), diffuziya modda (odatan moddai halkunanda)-ro az membrana (parda)-i nimguzaronandae guyand, ki mahlul va halkunandai toza yo du mahluli konsentrasiyaashon gunogunro az ham judo mekunad. Membranai nimguzaronanda saddest, ki molekulahoi khurdi halkunandaro az khud guzaronida, molekulahoi kalontarini moddai halshudaro doshta memonad. Faqat dar surati diffuziyai …

Ostrovskiy, dehaest dar Soveti qishloqi Panji payoni Qumsangir, viloyati Qurgonteppa. Territoriyai kolkhozi ba nomi V.ladimir Ilich Le­nin. Az deha to markazi Soveti qishloq 4 kilometr, to rayon 6 kilometr; roh asfaltpush. Aholiash 1400 nafar (1981), asosan tojikon. Deha maktabi miyona, kitobkhona, punkti tibbi, sartaroshkhona va magazin dorad. Sohai asosii khoja- …

Osori Vladimir Ilich Lenin dar tuli si soli faoliyati nazariyavi va tashkilotchigii khud (az soli 1893 to 1923) sadho kitobu broshyura, hazorho maqolayu maktub navishtaast, dar sezdu konferensiyahoi partiyavi, dar sezdhoi Sovetho, Kongresshoi Internasionali Kommunisti, dar majlisu Namoishhoi sershumori mehnatkashon bo nutqu maruzahoi ziyode baromad kardaast, bisyor qaroru rezolyutsiyaho, tezisho …

Osur (ar. — fishurdashavanda), bemoriero guyand, ki shakhsi ba on giriftor hangomi bedori dar sa­ri sinaash suzish va vaznini his mekunad.

Osori Karl Marks va Fridrikh Engels jamovari, chop, intishor va omukhtani merosi goyaviyu adabii asosguzoroni kommunizmi ilmi yake az sharthoi muhimi az jihati ideologi taqviyat dodani harakati baynalkhalqii korgari meboshad. Yak qator asarhoi mushtaraki Karl Marks va Fridrikh Engels hangomi dar qaydi hayot budani onho dar shakli kitobi alohida chop …

Ossillograf (az lotini  — melappam va …grafil), asbobi chen-kunandaest baroi mushohida kardani vobastagihoi bayni du yo yakchand buzurgihoi bo mururi zamon favri tagyiryobanda (jarayonu shiddat, basomadu kuchishi faza, davomatu basomadi takrori impuls va gayra). Ossillografi elektronshuoi beshtar mamul ast, ki dar on signali buzurgiho ba lavhai tamoilkhurandai karnai ossil­lografi meaftad …

«Osor-ul-bilod va akhbor-ul-ibod» asari tarikhiyu jugrofii muarrikhi fors- tojik Zakariyoi Qazvini, ki soli 1275 ba zaboni arabi talif shudaast. «Osor-ul-bilod va akhbor-ul-ibod» az sarsukhan, se muqaddimai nazari va haft bob iborat ast. Muqaddimai yakum az sababhoi ba vujud omadani jamiyati insoni, sokhti jamiyat, istehsolot va paydo shuda- ni shahrho, poytakhho, …

Ossillyator (az lotini oscillo — melappam), sistemai fizikai lappandaro guyand. Sistemam mekhanikie, ki dar nazdikii nuqtai muvozinat melappad, Ossillyatori klassiki nom giriftaast. Agar energiyai potensialii Ossillyator ba kvadrati tamoil az vaziyati muvozinat (in holat dar mavridhoi lappishhoi khurd joy do­rad) mutanosib boshad, onro Ossillyatori mavzuni (garmoniki) menomand. Mafhumi Ossillyatorro dar …

Parmachok, chohi mudavvarest, ki ba vositai dastgohi makhsusi parma khafr shuda, besh az 5 metr chuquri va 75—390 millimetr diametr dorad. Parmachoq mustaqim va moil meshavad. Parmachoq az dahoni chokh, qar va tanai on iborat ast. Holo amiqtarin Parmachoq dar nimjazirai Ko­la besh az 11 kilometr chuquri dorad, minbad juqurii …

Parovoz, lokomotive, ki muharriki on moshini bugi meboshad. Ele­menthoi asosii Parovoz inhoand: degi bug, moshini bugi, qismi ekipaj. Zakhirahoi suzishvori, ob va ravganhoi molidaniro odatan dar tender, ki ba Parovoz qush ast, choygir mekunand. Hangami dar otashdoni degi bug sukhtani suzishvori (angisht, mazut, chub, va gyra) obi deg bug meshavad. …