Perikardit (az peri… va kardio —dil), gazaki khaltachai dil (perikard). Perikarditi odam du khel mesha­vad: siroyati va gayrisiroyati. Perikarditi siroyatiro kokkho, virusho, mikobakteriyahoi sil vagayra. meangezand. Perikarditi siroyati vobasta ba namudi angezanda tarbodi, sifilisi, fasodi va gayra meshavad. Perikarditi gayrisiroya­ti Perikardite meboshad, ki hangomi ure­miya, infarkti miokard, jarrohii dil va …

Perimetr (yun. rerimetron — davra, az rerimetrio — atrofro chen mekunam), darozii konturi sarbast. In istilohro beshtar baroi ifodai hosili jami darozii hamai tarafhoi sekunja va bisyorkunja istifoda mebarand.

Periodonit (az peri… va yun. odontos — dandon), gazaki pardai resha va boftahoi atrofi dandon. Asosan badi kariesi dandon paydo me­shavad. Ammo az takroran zarb khurdani dandon (masalan, az rui odat gazidani angusht, qalam, mekh, bo dan­don kandani rishta va gayra) niz ba vujud meoyad. Periodontit shadid va muzmin meshavad. …

Periskop (az yun. reriskopeo — ba atrof menitaram), asbobi optikiest baroi mushohidai tank, kishtii zeriobi va gayra az daruni panohgoh (okon, zaminkand va gayra.). Bo yorii aksari Periskopho kunjhoi ufuqi va amudi dar mahal chen va masofai ob­ekt muayyan karda meshavad. Sokht va tavsifi optikii Periskophoro vobasta ba tainot, chop …

Periekho, perioykho (yun. rerioikoi, aynan — sokinoni atrof), aholii kamhuquqi baze polishoi Yunoni Qadim (dar Sparta, Argos, Elida, Fessaliya). Dar Sparta Periekho avlodi aholii tagjoi, ki onro doriyho mute namuda, ba kanori Lako­nika tang karda barovardaand. Periekho az plotho bo on farq mekardand, ki shakhsan ozod buda, metavonistand zamini khudro …

Per-Lashez (Pere- Lachaise), qabristonest dar Parij (sobik mulki piri Lyudoviki XIV— Lashez; nomi Per-Lashez az hamin jost). I.L. oromgohi buzurgtarin khodimoni ilmu madaniyat (J. Lafonten, J. B. P. Moler, Sh. Node, A. Dode, A. de Myusse, O. de Balzak, P. J. Beranje, F. Sho­pen, N- Rossini, E. Delakrua, D. Engr, …

Perlit (az frans. rerle — marvorid), shishai vulsqonii tursh, ki hangomi shikastan parra-parra judo meshavad. Rezahoi khurdi on bazan chun marvorid jilo medihand. Perlit az jihati  tarkib bo lavahoi tursh — liparitho, dasitho va gayra muvofiqat nekunad. Dar vaqti tez  tafsonidan obi Perliti maydakardashuda ba bug tabdil meyobad va khudi …

Permanganatomyotriya (az regmangarum — namaki kislotai magnat va …metriya), usuli tahlili khimiyavii titrimetri, ki dar on baroi muayyan kardani miqdori hajmho  mahluli permanganati kaliy az (K Mn O4) istifoda meshavad (nig.  Tahlili miqdori, Tahlili hajmi).   Hangomi Permanganatomyotriya binobar rangi khos (surkhi bunafsh) doshtani mahlul zarurati istifodai indikatori makhsus ) …

Perm, d a v r a i (s i s t e m a i) perm, davrai okhirii (shashum)-i erai paleozoy. Davrai Perm 285 mln  sol muqaddam ogoz yofta, 55 mln sol davom kardaast. Tahnishasthoi sistemai Permro bori nakhust soli 1841 geologi anglis R. I, Murchison dar Ural Zay (gub. …

Perovskit (az nomi arbobi davlatki rus, general L. A. Perovskiy), mineralest az sinfi oksidho. Tarkibi khimiyaviash SaTiOz (41,24% SaO va 58,76% TiO2); bazan omekhtahoi Se (knopit), Nb, Se, Ge (dizana­lit), Na, Se, Ti, Nb (loparit) do­rad. Dar sistemai psevdokubi kris­tall mebandad. Sakhtiash 5,5—6; zichiash 3950—4040 kg/m3. Rangash siyoh, siyohi khokistartob, …