13-letter words containing o, p, s
- pact of steel — a military alliance concluded between Nazi Germany and Fascist Italy on May 22, 1939, committing each to assist the other in the event of war with another power and pledging that neither would seek a separate peace or armistice.
- paedomorphism — the continuation of juvenile characteristics in the adult stage
- painted horse — paint (def 6).
- palaeocrystic — consisting of former glacial formation
- palazzo pants — women's trousers with very wide legs
- paleo-asiatic — a member of any of various Mongoloid peoples of northeastern Asia.
- paleosiberian — a group of languages comprising those languages of Siberia that are not affiliated with Indo-European, Altaic, Uralic, or Eskimo-Aleut and including the Chukotian family and the unrelated language isolates Ket, Nivkh, and Yukaghir; Paleo-Asiatic.
- palos heights — a city in NE Illinois, near Chicago.
- pamlico sound — a sound between the North Carolina mainland and coastal islands.
- pan-teutonism — Pan-Germanism.
- pandora shell — any marine bivalve of the genus Pandora, having a scimitar-shaped shell with a pronounced ridge along the hinge.
- pandora's box — a source of extensive but unforeseen troubles or problems: The senate investigation turned out to be a Pandora's box for the administration.
- pangola grass — a grass, Digitaria decumbens, native to southern Africa, cultivated for hay and forage in the southeastern U.S.
- pannikin boss — an overseer of a small group of workers; person with minor authority.
- pantheologist — a student of, or expert in, pantheology
- pantisocratic — relating to pantisocracy
- papaveraceous — belonging to the Papaveraceae, the poppy family of plants.
- paper profits — an unrealized profit due to the appreciation of something owned but not yet sold.
- papillomatous — a benign tumor of the skin or mucous membrane consisting of hypertrophied epithelial tissue, as a wart.
- paradise lost — an epic poem (1667) by John Milton.
- paramyxovirus — any of various RNA-containing viruses that are similar to but larger than the myxoviruses, including the viruses that cause mumps, measles, parainfluenza, and Newcastle disease.
- parapophysial — of or relating to a parapophysis
- parapsychosis — an abnormal psychosis
- parasitoidism — the feeding by certain insect larvae on host tissues such that the host remains alive until larval development is complete and then usually dies.
- parasoft corp — Distributors of the message passing system Express.
- parasymbiosis — the symbiotic relationship that occurs between certain species of fungi and lichens (which are themselves symbiotic associations between a fungus and an alga)
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- paris commune — commune3 (def 8).
- parker bowles — Camilla (née Shand). born 1947, became the second wife of Prince Charles in 2005; created Duchess of Cornwall and Duchess of Rothesay
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal
- parrot's-bill — a showy, vinelike plant, Clianthus puniceus, of New Zealand, having clusters of eight white-streaked, crimson flowers.
- parson's nose — pope's nose.
- parsons table — a square or rectangular table, often of lightweight material, with straight legs that are square in cross section and of the same thickness as the top extending from the corners flush with the top so as to appear jointless.
- parthenopaeus — a son of Hippomenes and Atalanta, and one of the Seven against Thebes.
- parthenospore — a spore developed without fertilization.
- parthian shot — a sharp, telling remark, act, gesture, etc., made in departing.
- pass the word — If you pass the word, you tell someone something that another person has told you.
- passamaquoddy — a member of a small tribe of North American Indians formerly of coastal Maine and New Brunswick and now living in Maine.
- passe compose — a grammatical construction of French consisting of the present tense of an auxiliary, either avoir or être, followed by a past participle and corresponding in function to both the English present perfect and the English simple past tenses.
- passe-partout — something that passes everywhere or provides a universal means of passage.
- passion cross — Latin cross.
- passion fruit — any edible fruit of a passionflower, as the maypop.
- passionflower — any chiefly American climbing vine or shrub of the genus Passiflora, having showy flowers and a pulpy berry or fruit that in some species is edible.
- passive voice — grammar: verb form takes when subject acted upon
- past anterior — a pluperfect verb (in French)
- past historic — the simple past
- pastel orange — suntan (def 3).
- pastoral care — help with personal needs and problems given by a teacher
- pathomorphism — abnormal morphology.
- patriot's day — the third Monday in April, a legal holiday in Me. and Mass. commemorating the battles of Lexington and Concord (April 19, 1775)