Parabola (yun. ragaole — nazdikshavi), khati buriyashi konusi mudavvar va hamvorie, ki ba yagon hamvorii ba hamii kopus rasanda parallel ast (rasmi 1). Dar matemati­ka chunin tarifi Parabola beshtar malum ast: Parabola joi geomet­rii nuqtahoi hamvori meboshad (rasmi 2), ki az nuqtai ba istiloh fokus (G) va az khati rosta …

Paraboloidho (az  parabola va yun. eidos — shakl, namud), sathhoi nomahdudi tartibi duyum, ki marka nadorand. Du namudi Paraboloidho vujud dorad; Paraboloidhoi ellipsi va paraboloidi giperboli. Az 5 navi asosii satkhhoi tartibi duyum dutoash Paraboloidho meboshad. Khat­hoi burishi Paraboloidho bo hamvorihoi gunoguni fazo giperbola, parabola va khathoi rost meboshand. Az …

Paragvaiho, aholii asosii Pa­ragvay, ki taqriban 99% sokinonashro tashqil medihad. Shumoraashon qarib 3 mln nafar (1978). Paragvaiho asosan asrhoi 17—18 dar natijai omezishi hindiyoni guarani va ispaniho tashakkul yoftaand; az jihati antropo­logi beshtar duragaand. Ziyoda az nisfi Paragvaiho bo du zabon — ispani va guarani gap mezanand. Dindoron ka­tolikand. Doir …

Paragvay (Raraguay), daryoest dar Braziliya va Paragvay, shokhobi  rosti daryoi Parana. Tulash 2200 km (az rui malumothoi digar 2500 km); masohati havzaash 1150 hazor km2. Az qismi shimolu garbii pahnkuhi Braziliya ogoz yofta, ba samti J. jori meshavad, pastkhamii vasei botloqzori Pantanal va qismi pastii  Gran-Chakoro burida meguzarad. Bari daryo …

Paragvay (Raraguay), R e s p u b l i k a i Paragvay (Republica del Paraguay). Paragvay, davlatest dar qismi markazii Amerikai Janubi. Dar Shimol va Shimolu Garbi bo Boliviya, dar Shimolu Sharq va Sharq bo Braziliya, dar Janub,  va Garb bo Argentina hamsarhad ast. Masohati.—406,8 hazor km2. Aholiash …

Paragenezisi mineralho (az para… va genezis), dar qishri Zamin qonunan yakjoya voqe budani mineralhoro guyand, ki dar sharoiti mushtarak ba vujud omadaand. Istilohi «Paragenezisi mineralho» bori avval soli 1849 istifoda shudaast. Mafhumi «Paragenezisi mineralho» boshad, solhoi 20 asri 20 dar asarhoi V. I. Vernadskiy inkishofi komil yoft. Muhimtarin omilhoe, ki …

Parazitizm dar biologiya yak shakli hamzistii organizmhoi gunogun (rastaniho, hayvonot va mikroorganizmho)-ro guyand, ki dar jarayoni op yake (parazit) digare (ho­mil)-ro chun muhiti zindagi va manbai gizo istifoda mebarad. Vobasta ba joi zist Parazitizm du khel meshavad: Parazitizmi beruni yo ektoparazitizm (parazit dar rui badani homil zindagi mekunad) va Parazitizmi …

Parkamchi, dehaest dar Soveti qishloqi Pushing, rayoni Dangarai viloyati Kulob. Territoriyai sovkhozi ba nomi Karl Marks. Az Parkamchi to markazi Soveti qishloq 20 kilometr, to rayon 21 kilometr. Aholiash 711 nafar. (1983). tojikon. Deha maktabi 8-sola, kitobkhona, punkti tibbi, magazin, fermahoi,gov, khuk va murgparvari dorad. Sohahoi asosii khojagi — gallakorii …

Parki moshinu traktor dar khojagik qishloq, moshinhoe, ki ba­roi mekhanikonidani kishtukori rastanihoi khojagii qishloq zarurand. Parki moshinu traktor az gurukhhoi zerin iborat ast: traktorho (shassikhoi khudgard) chun vositai energetikii universali; moshinhoi khochagii qishloq, ki ba traktorho agregatonida meshavand (plugho, tukhmiposhakho, sikhmolaho, kultivatorho, alafdaravakho, moshinhoi gunoguni gayrikhudgardi hosilgundor va gayra); moshinhoi …

Parkinsonizm, b e m o r i i  Parkinson, bemorii muamini sistemai asabi markaziro guyand, ki boisi illati funksiyai uzvhoi kharakat megardad. Parkinsonizmro bori avval  dukhturi anglis J. Parkinson (1817) bayon kardaast. Ba in bemori beshtar odamoni miyonasol giriftor meshavand. Sababi asosii ba vujud omadani Pankirsonizm ensefalit (illati magzi sar) …