Dedication: 3/15/05

parco, parsum: spare

parsimonious, parsimoniously, parsimony

pareo: appear; appareo: appear

apparent, apparently, apparition, apparitor, appear, appearance, compear, compearance, compearant, disappear, disappearer, disappearance, heir apparent, inapparent, nonapparent, nonappearance, reappear, reappearance, transparency, transparent, transparently

paries (gen. parietis): wall

biparietal, intraparietal, paries, parietal, subparietal

pario, partum: give birth; parens: parent

antepartum, amphiparous, biparental, biparous, congestiparous, co-parent, criniparous, deiparous, dentiparous, dorsiparous, fetiparous, fissiparous, foliiparous, frondiparous, gemmiparous, godparent, grandparent, gravipara, greatgrandparent, in loco parentis, larviparous, muciparous, multipara, multiparity, multiparous, nullipara, nulliparous, nymphiparous, omniparous, oviparity, oviparous, ovoviviparous, para, parent, parentage, parental, parentalism, parentality, parentally, parentcraft, parentela, parentelic, parenthood, parenticide, parenting, parentless, parentship, parous, parturiency, parturient, parturifacient, parturition, planned parenthood, pluriparous, polyparous, postpartum, primipara, primiparous, puerperal, purpuriparous, quadriparous, ramiparous, repertoire, repertory, sebiparous, secundipara, seed parent, sexuparous, step-parent, sudoriparous, tubiparous, unipara, uniparental, uniparous, unparented, uriniparous, viper, viperid, viperiform, viperine, viperish, viperling, viperous, viperously, viviparity, viviparous, viviparously, vivipary, water viper

See also aperio, operio.
Parisii: Parisii (tribe of Gauls)

Paris, Parisian, Parisienne

parma: shield

Parma, Parmesan, Parmesan cheese

paro (1): prepare; comparo: get ready

aparejo (Sp), apparat, apparatchik, apparatus, comprador, disimperialism, disrepair, dissever, disseverance, disseveration, disseverment, divide et impera, emperor, emperorship, empire, empress, imperatival, imperativally, imperative, imperatively, imperativeness, imperativism, imperator, imperatorial, imperatorially, imperial, imperialism, imperialist, imperialistic, imperialize, imperially, imperious, imperiously, imperiousness, imperium, inseparability, inseparable, inseparably, inseparate, inseparately, inseparable, inseparableness, inseparation, inseparative, inseverable, inseverably, irreparable, irreparably, mpret, neoimperialist, overprepare, parade, paradeless, parader, parados, parament, parapet, parapetless, pare, parer, paring, parison, parrier, parry, photorepair, prep, preparate, preparation, preparative, preparator, preparatory, prepare, preparedness, preparer, preprepared, preppy, rampart, repair (fix), repairer, repairman, reparable, reparably, reparation, reparative, scuba, semper paratus, separability, separable, separate, separately, separateness, separation, separationism, separationist, separatism, separatist, separatistic, separative, separator, separatory, separatrix, sever, severable, several, severally, serveralty, severance, shoe repair, unprepared, unpreparedly, unpreparedness, unrepaired, unseparated, unsevered

N.B. OED indicates that para- of parachute etc. is not from paro.
pars (gen. partis):