16-letter words containing s, e, p, i, o
- petrified forest — a national park in E Arizona, containing petrified coniferous trees about 170 000 000 years old
- pharmacogenetics — the branch of pharmacology that examines the relation of genetic factors to variations in response to drugs.
- pharmacogenomics — the study of human genetic variability in relation to drug action and its application to medical treatment
- pharmacokinetics — the branch of pharmacology that studies the fate of pharmacological substances in the body, as their absorption, distribution, metabolism, and elimination.
- phase microscope — a microscope that utilizes the phase differences of light rays transmitted by different portions of an object to create an image in which the details of the object are distinct despite their near-uniformity of refractive index.
- phase modulation — radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.
- philosopher king — the Platonic ideal of a ruler, philosophically trained and enlightened.
- philosopher-king — the Platonic ideal of a ruler, philosophically trained and enlightened.
- phlebothrombosis — the presence of a thrombus in a vein.
- phosphor fatigue — screen saver
- photoluminescent — luminescence induced by the absorption of infrared radiation, visible light, or ultraviolet radiation.
- photorespiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
- photosensitivity — the quality of being photosensitive.
- phototypesetting — Printing. photocomposition.
- pick up stompies — to come late to a conversation and so misunderstand what is being discussed
- pico de sao tome — an island in the Gulf of Guinea, off the W coast of Gabon, just N of the equator: the larger component of the Democratic Republic of São Tomé and Príncipe. 318 sq. mi. (824 sq. km).
- picture postcard — postcard (def 1).
- piece d'occasion — something prepared or used for a special occasion.
- pincers movement — a military maneuver in which both flanks of an enemy force are attacked with the aim of attaining complete encirclement.
- pique oneself on — to be proud of
- pitch inspection — in inclement weather, a pre-match inspection of the playing surface in order to determine whether it is in good enough condition for the match to go ahead
- place of worship — religious house: church, temple
- plain-spokenness — the quality or characteristic of being plain-spoken
- plainclothes man — a detective or police officer who wears civilian clothes while on duty
- plaster of paris — calcined gypsum in white, powdery form, used as a base for gypsum plasters, as an additive of lime plasters, and as a material for making fine and ornamental casts: characterized by its ability to set rapidly when mixed with water.
- pneumonoconiosis — pneumoconiosis.
- pocket billiards — pool2 (def 1).
- point estimation — the process of determining a single estimated value (point estimate) of a parameter of a given population.
- poiseuille's law — the law that the velocity of a liquid flowing through a capillary is directly proportional to the pressure of the liquid and the fourth power of the radius of the capillary and is inversely proportional to the viscosity of the liquid and the length of the capillary.
- poisoned chalice — If you refer to a job or an opportunity as a poisoned chalice, you mean that it seems to be very attractive but you believe it will lead to failure.
- poitou-charentes — a region of W central France, on the Bay of Biscay: mainly low-lying
- police constable — police officer
- police inspector — rank of police officer in the UK
- policy statement — a declaration of the plans and intentions of an organization or government
- political system — a coordinated set of principles, laws, ideas, and procedures relating to a particular form of government, or the form of government itself: Democracy is a political system in which citizens govern themselves.
- polycondensation — formation of a polymer by chemical condensation with the elimination of a small molecule, such as water.
- polyphonic prose — prose characterized by the use of poetic devices, as alliteration, assonance, rhyme, etc., and especially by an emphasis on rhythm not strictly metered.
- ponderosa (pine) — a yellow pine (Pinus ponderosa) of W North America, valued for its timber
- poor white trash — white trash.
- pop the question — to make a short, quick, explosive sound: The cork popped.
- port authorities — the body with overall responsibility for a port
- portuguese india — a former Portuguese overseas territory on the W coast of India, consisting of the districts of Gôa, Daman, and Diu: annexed by India December 1961. Capital: Gôa.
- portuguese timor — former (1914-75) Portuguese territory in the Malay Archipelago
- posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
- positive vetting — the checking of a person's background, political affiliation, etc, to assess his suitability for a position that may involve national security
- possession order — (in Britain) a court order that entitles a landlord legally to evict a tenant or squatter and regain possession of the property
- post-elizabethan — of or relating to the reign of Elizabeth I, queen of England, or to her times: Elizabethan diplomacy; Elizabethan music.
- post-pleistocene — noting or pertaining to the epoch forming the earlier half of the Quaternary Period, beginning about two million years ago and ending 10,000 years ago, characterized by widespread glacial ice and the advent of modern humans.
- post-reformation — the act of reforming; state of being reformed.
- post-renaissance — the activity, spirit, or time of the great revival of art, literature, and learning in Europe beginning in the 14th century and extending to the 17th century, marking the transition from the medieval to the modern world.