14-letter words containing a, c, e, y
- petty official — a minor official in government, etc
- phase velocity — the velocity with which a simple harmonic wave is propagated, equal to the wavelength divided by the period of vibration.
- phenologically — in a phenological manner
- phenotypically — the observable constitution of an organism.
- phenyl acetate — a colorless, water-insoluble liquid, C 8 H 8 O 2 , having a phenolic odor: used chiefly as a solvent.
- phenylcarbinol — benzyl alcohol.
- phthalocyanine — Also called metal-free phthalocyanine. a blue-green pigment, C 3 2 H 1 8 N 8 , derived from phthalic anhydride.
- phyllosilicate — any silicate mineral having the tetrahedral silicate groups linked in sheets, each group containing four oxygen atoms, three of which are shared with other groups so that the ratio of silicon atoms to oxygen atoms is two to five.
- physical layer — (networking) Layer one, the lowest layer in the OSI seven layer model. The physical layer encompasses details such as electrical and mechanical connections to the network, transmission of binary data as changing voltage levels on wires or similar concepts on other connectors, and data rates. The physical layer is used by the data link layer. Example physical layer protocols are CSMA/CD, token ring and bus.
- pick one's way — to choose or select from among a group: to pick a contestant from the audience.
- picture layout — a picture spread. See under spread (def 33).
- plastic memory — the tendency of certain plastics after being deformed to resume their original form when heated
- platinocyanide — a salt of platinocyanic acid.
- platycephalous — flat-headed
- play one's ace — to use one's best weapon or resource
- pleural cavity — a narrow, fluid-filled space between the pleural membranes of the lung and the inner chest wall.
- pneumatic tyre — a rubber tyre filled with air under pressure, used esp on motor vehicles
- pneumodynamics — Physics. pneumatics.
- police academy — a school for training police officers
- policy adviser — a person who provides ideas or plans that are used by an organization or government as a basis for making decisions
- polyacrylamide — a white, solid, water-soluble polymer of acrylamide, used in secondary oil recovery, as a thickening agent, a flocculant, and an absorbent, and to separate macromolecules of different molecular weights.
- polycarpellary — consisting of two or more carpels.
- polysaccharide — a carbohydrate, as starch, inulin, or cellulose, containing more than three monosaccharide units per molecule, the units being attached to each other in the manner of acetals, and therefore capable of hydrolysis by acids or enzymes to monosaccharides.
- post-pregnancy — the state, condition, or quality of being pregnant.
- postmastectomy — of or relating to the period after a mastectomy
- predictability — consistent repetition of a state, course of action, behavior, or the like, making it possible to know in advance what to expect: The predictability of their daily lives was both comforting and boring.
- pregnancy test — diagnostic kit for determining pregnancy
- presymptomatic — relating to or describing a symptom that occurs before the typical symptoms of a disease
- primacy effect — the process whereby the first few items on a list are learnt more rapidly than the middle items
- primary accent — the principal or strongest stress of a word.
- primary source — first or highest in rank or importance; chief; principal: his primary goals in life.
- princess royal — the eldest daughter of a king or queen.
- principal type — The most general type of an expression. For example, the following are all valid types for the lambda abstraction (\ x . x): Int -> Int Bool -> Bool (a->b) -> (a->b) but any valid type will be an instance of the principal type: a -> a. An instance is derived by substituting the same type expression for all occurences of some type variable. The principal type of an expression can be computed from those of its subexpressions by Robinson's unification algorithm.
- processability — capable of being processed.
- prosthetically — a device, either external or implanted, that substitutes for or supplements a missing or defective part of the body.
- protectability — to defend or guard from attack, invasion, loss, annoyance, insult, etc.; cover or shield from injury or danger.
- protocol layer — (networking) The software and/or hardware environment of two or more communications devices or computers in which a particular network protocol operates. A network connection may be thought of as a set of more or less independent protocols, each in a different layer or level. The lowest layer governs direct host-to-host communication between the hardware at different hosts; the highest consists of user application programs. Each layer uses the layer beneath it and provides a service for the layer above. Each networking component hardware or software on one host uses protocols appropriate to its layer to communicate with the corresponding component (its "peer") on another host. Such layered protocols are sometimes known as peer-to-peer protocols. The advantages of layered protocols is that the methods of passing information from one layer to another are specified clearly as part of the protocol suite, and changes within a protocol layer are prevented from affecting the other layers. This greatly simplifies the task of designing and maintaining communication systems. Examples of layered protocols are TCP/IP's five layer protocol stack and the OSI seven layer model.
- psychoanalyses — a systematic structure of theories concerning the relation of conscious and unconscious psychological processes.
- psychochemical — pertaining to chemicals or drugs that affect the mind or behavior.
- pterylographic — relating to pterylography
- public gallery — the gallery in a chamber of Parliament reserved for members of the public who wish to listen to the proceedings
- pure democracy — a form of democracy in which the laws and policies are made directly by the citizens rather than by representatives.
- pyjama cricket — one-day cricket, in which the players wear colourful clothing rather than the traditional whites used in longer forms of the game
- pyramid scheme — pyramid (def 8).
- pyrotechnician — a specialist in the origin of fires, their nature and control, etc.
- quality circle — a group of workers performing similar duties who meet periodically to discuss work-related problems, offer suggestions for improved production or product quality, etc.
- quoted company — a company whose shares are quoted on a stock exchange
- racing bicycle — a bicycle designed for cycling on roads or taking part in road cycling races
- radiochemistry — the chemical study of radioactive elements, both natural and artificial, and their use in the study of chemical processes.
- radiofrequency — the frequency of the transmitting waves of a given radio message or broadcast.