16-letter words containing a, r, o, l, i
- peregrine falcon — a globally distributed falcon, Falco peregrinus, much used in falconry because of its swift flight: several subspecies are endangered.
- periodic decimal — repeating decimal.
- perpetual motion — the motion of a theoretical mechanism that, without any losses due to friction or other forms of dissipation of energy, would continue to operate indefinitely at the same rate without any external energy being applied to it.
- personal details — details about a person such as their name and address
- personal hygiene — bodily cleanliness
- personal liberty — the liberty of an individual to do his or her will freely except for those restraints imposed by law to safeguard the physical, moral, political, and economic welfare of others.
- personal pension — a private pension scheme in which an individual contributes part of his or her salary to a financial institution, which invests it so that a lump sum is available on retirement; this is then used to purchase an annuity
- personal stylist — a person employed by a rich or famous client to offer advice on clothes, hairstyles, and other aspects of personal appearance
- personal trainer — a person who works one-on-one with a client to plan or implement an exercise or fitness regimen.
- personal tuition — private tuition
- personality cult — deliberately cultivated adulation of a person, esp a political leader
- personality test — an instrument, as a questionnaire or series of standardized tasks, used to measure personality characteristics or to discover personality disorders.
- personality type — a cluster of personality traits commonly occurring together
- petrol rationing — a scheme rationing the amount of petrol that an individual is allowed to purchase
- phantasmagorical — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- philanthropistic — a person who practices philanthropy.
- photolithography — the technique or art of making photolithographs.
- photopolarimeter — a polarimeter that uses a photocell.
- place of worship — religious house: church, temple
- 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.
- pocket billiards — pool2 (def 1).
- polar coordinate — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
- polar opposition — the relation between a pair of antonyms that denote relatively higher and lower degrees of a quality with respect to an explicit or implicit norm rather than absolute values, as the relation between tall and short or light and dark, but not between true and false.
- polarizing angle — the law that light will receive maximum polarization from a reflecting surface when it is incident to the surface at an angle (angle of polarization or polarizing angle) having a tangent equal to the index of refraction of the surface.
- polyacrylic acid — a polymer of acrylic acid used as a sizing agent in the manufacture of nylon and other synthetic textiles.
- polyvinyl formal — a colorless, water-insoluble, polyvinyl acetal produced from partially hydrolyzed polyvinyl acetate and formaldehyde, used chiefly in the manufacture of lacquers.
- porcelain enamel — a glass coating, made to adhere to a metal or another enamel by fusion.
- port phillip bay — a bay in SE Australia: the harbor of Melbourne. 31 miles (50 km) long; 25 miles (40 km) wide.
- portable airtime — (communications, wireless) A wireless, digital communications system enabling user-to-user voice communication, "quicknotes", and alphanumeric messaging.
- portrait gallery — a gallery where pictures are displayed
- potential energy — the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system.
- practical reason — (in Kantian ethics) reason applied to the problem of action and choice, especially in ethical matters.
- pre-solicitation — the act of soliciting.
- precontemplation — the act of contemplating; thoughtful observation.
- predispositional — the fact or condition of being predisposed: a predisposition to think optimistically.
- prerevolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
- pribilof islands — a group of islands in the Bering Sea, off SW Alaska, belonging to the US: the breeding ground of the northern fur seal. Area: about 168 sq km (65 sq miles)
- primary election — primary (def 15a).
- primary electron — in thermionics, any of the electrons falling on a body, distinguished from those emitted by it
- print journalism — journalism as practiced in newspapers and magazines.
- prismatic colors — the colors of the visible spectrum produced by passing white light through a prism; red, orange, yellow, green, blue, indigo, and violet
- pro-abolitionist — (especially prior to the Civil War) a person who advocated or supported the abolition of slavery in the U.S.
- processing plant — a factory where raw materials are treated or prepared by a special method, esp one where food is treated in order to preserve it
- proenvironmental — the aggregate of surrounding things, conditions, or influences; surroundings; milieu.
- professionalisms — professional character, spirit, or methods.
- programmatically — by using a computer program: You can set the value in each field programmatically with a simple algorithm. The background shapes can be programmatically drawn and animated.
- project planning — project management
- projective plane — (mathematics) The space of equivalence classes of vectors under non-zero scalar multiplication. Elements are sets of the form {kv: k != 0, k scalar, v != O, v a vector} where O is the origin. v is a representative member of this equivalence class. The projective plane of a vector space is the collection of its 1-dimensional subspaces. The properties of the vector space induce a topology and notions of smoothness on the projective plane. A projective plane is in no meaningful sense a plane and would therefore be (but isn't) better described as a "projective space".
- prolonged-action — sustained-release.
- promotional code — A promotional code is a code offered by retailers to customers who can use it to receive a discounted price when buying products online.