Ostona, qitai khurdi peshi  darro guyand, ki az takhta, sang va gayra sokhta shuda baroi az nami, rutubat himoya kardani tagdari khizmat mekunad. Pogundai bolotarini tagi darro niz bazan Ostona nomand.

Paropamiz (yunoni PaVopamiBadai), viloyati tarikhi dar janubi sharqii Afgonistoni imruza. Paropamiz dar asrhoi 6-4 to milod ba hayati davlati Hakhomanishiyon va imperiyai Iskandari Makduni hosil meshud, Taqriban soli 300 to milod. Selevk onro ba Chandraguptai Mavriya dod. Minbad Paropamizro Yunonu Bokhtar, asrkhoi avvali milod boshad, davlati Kushoniyon ba dast darovardand. …

Ostonabobo, yodgorii memorii asri 12 dar dehai hamnomi payoni Kar­kii viloyati Chorjui Respublikai Sovetii Sotsialistii Turkmaniston. Dar bayni aholii mahalli bo nomi Mazori Ostonabobo, Maqbarai Zaydaliyu Zubaydali, Maqbarai khamsaron Ubaydu Zubayd a mashhur ast. Ostinbobo  chor gunbaz dorad. Asosi Ostonabobo az du qism — masjid va «devonakhona» iborat ast (har …

Kuhhoi Paropamiz, sistemam kuhiest dar qismi shimoli garbiya Afgoniston. Domanakuhhoi garbii on — balandihoi Bodkhez va Qarobel dar territoriyai Respublikai Sovetii Sotsialistii  Turkmeniston voqe gashtaand. Paropamiz az qatorkuhhoi ba samti arz kasholyofta (Ban­di Turkiston, Safedkuh, Siyohkuh va gayra) iborat meboshad. Tulash 600 kilometr, barash to 250 kilometr. Balandin qismi ziyodi …

Ostrava (Ostrava), Moravska- Ostrava, shahrest dar Chekhoslova­kiya, dar Respublikai Sotsialistii Chekhiya, dar sohili daryoi Odra (Oder). Markazi mamurii viloyati Moraviyai Shimoli. Aholiash 317 hazor nafar (1976). Uzeli muhimi naqliyot. Mar­kazi nohiyai asosii angishtu metal­lurgiyai mamlakat. Sanoati angisht, istehsoli koks, koksu khimiya, khimiya, moshinsozii vaznin rivoj yoftaast. Donishkadahoi olii moshinsozi va …

Parokhod (az rusi par—bug va khod — harakat), k i sh t i i  bugi, kishtii khudgardest, ki bo muharriki bugi (moshini bugi yo turbina) ba harakat ovarda meshavad. Parokhodi turbinagiro turbokhod niz menomand. Parokhodsozi badi ikhtiroi moshinhoi bugi cap shuda boshad kham, istifodai amalii on faqat az avvali asri …

Ostrovskiy Aleksandr Nikola­evich (12. 4. 1823, Moskva —14. 6. 1886, Shelikovo, hozira payoni Ostrovskin viloyati Kostroma), dramaturgi rus. Az oilai huquqshinosi sohibmansab; modarash az tabaqai poyoni ruhoniyon. Dar Gimnaziyap 1-umi Moskva (1835—40) va fakulteti huquqshinosii Universiteti Moskva (1840—43; notamom) tahsil kardaast. Ayyomi khizmat dar idorahoi mahkamai Moskva (1843—51) tajribai ziyodi …

Osoaviakhim, Jamiyati yormandi ba mudofia, sokhtmoni aviatsioni va khimiyavi, tashkiloti ommavii ikhtiyorii jamiyatii grajdanhoi Ittifoqi Soveti, ki solhoi 1927—48 vujud dosht. Vazifahoi asosii Osoaviakhim iborat az mustahkam gardonidani qobiliyati mudofiavii mamlakat, dar bayni aholi pahn kardani donishhoi harbi va dar ruhi vatandusti tarbiya namudani mehnatkashon bud. Soli 1948 ba joi …

«Osor-ul-boqiya» avvallin asari kalonhajmi Abu rayhoni Beruni, ki soli 1000 ba zaboni arabi navishta shudaast. «Osor-ul-bilod va akhbor-ul-ibod.» ba amiri Gurgon Shamsulmaoli Qobus bo unvoni «Al-osor-ul-boqiya va ana-l-qurun-il kholiya» talif yofta, bo nomi «Osor-ul-boqiya» mamul ast. Mundarijap «Osor-ul-bilod va akhbor-ul-ibod»-ro (masalahoi bahsi olimoni mashriqzamin oid ba paydoishi olam, hayot, nazari …

Osteodistrofiya (az yunoni osteo… va distrofiya), yak guruh bemorihoi boftai ustukhonro guyand, ki dar natijai vayronshavii prosessi mubodilai moddaho ba vujud meoyand. Hangomi Osteodistrofiya sokhti ustukhoni qismhoi gunoguni skelet tagyir meebad. Osteodistrofiya paratireoidi, deformasiyakunanda, juzii fibrozi, toksiki (zahri) va gayra meshavad. Az inho tanho du shakli avvalai Osteodistrofiya beshtar mamul …