13-letter words containing a, p, o, s, t, l
- optical sound — sound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack.
- osteoplasties — Plural form of osteoplasty.
- outwash plain — Geology. a broad, sloping landform built of coalesced deposits of outwash.
- overspeculate — to engage in thought or reflection; meditate (often followed by on, upon, or a clause).
- ovipositional — pertaining to the laying of eggs through an ovipositor
- 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.
- 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.
- palos heights — a city in NE Illinois, near Chicago.
- pantheologist — a student of, or expert in, pantheology
- 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.
- 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.
- 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.
- pastel orange — suntan (def 3).
- pastoral care — help with personal needs and problems given by a teacher
- patripotestal — Anthropology. of or relating to the authority exercised by a father or a father's blood relatives.
- pentadelphous — (of a plant) having its stamens arranged in five groups; (of stamens) being arranged in five groups
- periodicalist — a writer of articles for periodicals
- perissodactyl — having an uneven number of toes or digits on each foot.
- perlustration — the act of perlustrating; a thorough inspection or survey, esp of letters for purposes of surveillance
- personal best — A sports player's personal best is the highest score or fastest time that they have ever achieved.
- personalistic — Also called personal idealism. a modern philosophical movement locating ultimate value and reality in persons, human or divine.
- personalities — the visible aspect of one's character as it impresses others: He has a pleasing personality.
- petropavlovsk — a city in N Kazakhstan on the Ishim River. Pop: 190 000 (2005 est)
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- phelloplastic — an image or a representation that has been fashioned from cork
- phlogisticate — to integrate or blend phlogiston with
- phosphorylate — to introduce the phosphoryl group into (an organic compound).
- photovoltaics — (used with a singular verb) a field of semiconductor technology involving the direct conversion of electromagnetic radiation as sunlight, into electricity.
- phraseologist — a person who treats of or is concerned with phraseology.
- pictorialness — the state of being pictorial
- pilot station — Also called pilotage. an onshore office or headquarters for pilots.
- plagiostomous — plagiostome
- plagiotropism — plagiotropic tendency or growth.
- plain-clothes — Plain-clothes police officers wear ordinary clothes instead of a police uniform.
- plane spotter — a person who observes, photographs, and catalogues aircraft as a hobby
- planetologist — the branch of astronomy that deals with the physical features of the planets.
- plasmodesmata — any of many minute strands of cytoplasm that extend through plant cell walls and connect adjoining cells.
- plastic money — credit cards, used instead of cash
- plastoquinone — a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis.
- platform shoe — a shoe with a platform.
- platiniferous — platinum-bearing
- platitudinous — characterized by or given to platitudes.
- platykurtosis — the state of being platykurtic.
- play politics — the science or art of political government.
- pleasure boat — recreational vessel
- plethysmogram — the recording of a plethysmograph.