14-letter words containing a, t, o, p
- protectability — to defend or guard from attack, invasion, loss, annoyance, insult, etc.; cover or shield from injury or danger.
- proto-germanic — the unattested prehistoric parent language of the Germanic languages; Germanic.
- 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.
- protocol stack — (protocol) A layered set of protocols which work together to provide a set of network functions. Each intermediate protocol layer uses the layer below it to provide a service to the layer above. The OSI seven layer model is an attempt to provide a standard framework within which to describe protocol stacks.
- protohistorian — a student of or expert in protohistory
- protoplanetary — of or relating to protoplanets
- prototypically — in a prototypical manner
- providentially — of, relating to, or resulting from divine providence: providential care.
- provisionality — providing or serving for the time being only; existing only until permanently or properly replaced; temporary: a provisional government.
- pseudo-ethical — pertaining to or dealing with morals or the principles of morality; pertaining to right and wrong in conduct.
- pseudodipteral — having an arrangement of columns suggesting a dipteral structure but without the inner colonnade.
- pseudopregnant — relating to the state of pseudopregnancy
- psilanthropism — the doctrine that Jesus Christ was only a human being.
- psilanthropist — a person who believes that Jesus was merely human
- psycho-somatic — of or relating to a physical disorder that is caused by or notably influenced by emotional factors.
- psychoacoustic — relating to psychoacoustics
- psychoanalytic — a systematic structure of theories concerning the relation of conscious and unconscious psychological processes.
- psychosomatics — the study of psychosomatic conditions
- pterylographic — relating to pterylography
- puerto barrios — a seaport in E Guatemala.
- puerto cabello — a seaport in N Venezuela.
- pulmonary tree — the trachea, bronchi, and bronchioles of the lungs, which together resemble an upside-down tree.
- pumped storage — a system for generating hydroelectric power for peak periods by pumping water from a lower to a higher reservoir during low-demand periods and then releasing it during peak periods.
- punch operator — a person who enters data into cards by means of punching holes
- punctuationist — a person who punctuates a text
- put on the map — a representation, usually on a flat surface, as of the features of an area of the earth or a portion of the heavens, showing them in their respective forms, sizes, and relationships according to some convention of representation: a map of Canada.
- put on the pan — to criticize severely
- put one across — to get (someone) to accept or believe a claim, excuse, etc, by deception
- put the arm on — the upper limb of the human body, especially the part extending from the shoulder to the wrist.
- pygmy marmoset — a related form, Cebuella pygmaea: the smallest monkey, inhabiting tropical forests of the Amazon
- pyophthalmitis — suppurative inflammation of the eye.
- pyramidologist — a person who believes in pyramidology
- pyrometallurgy — the process or technique of refining ores with heat so as to accelerate chemical reactions or to melt the metallic or nonmetallic content.
- pyrophotograph — a photograph produced by a burning process, such as on glass or porcelain
- pyrotechnician — a specialist in the origin of fires, their nature and control, etc.
- pythagoreanism — the doctrines of Pythagoras and his followers, especially the belief that the universe is the manifestation of various combinations of mathematical ratios.
- quadrantanopia — (medicine) The loss of vision in one or more quadrants of the field of view.
- quantum optics — the branch of optics dealing with light as a stream of photons, each possessing a quantum of energy proportional to the frequency of light when it is considered as a wave motion.
- quasi-complete — having all parts or elements; lacking nothing; whole; entire; full: a complete set of Mark Twain's writings.
- quota sampling — a method of conducting market research in which the sample is selected according to a quota-system based on such factors as age, sex, social class, etc
- quoted company — a company whose shares are quoted on a stock exchange
- quotient space — a topological space whose elements are the equivalence classes of a given topological space with a specified equivalence relation.
- radar operator — someone who operates the equipment used in radar, a method for detecting the position and velocity of a distant object
- radio operator — a person who operates or controls a radio transmitter
- radio spectrum — the portion of the electromagnetic spectrum that includes radio waves.
- radioautograph — autoradiograph.
- radiotelegraph — a telegraph in which messages or signals are sent by means of radio waves rather than through wires or cables.
- radiotelephone — a telephone in which sound or speech is transmitted by means of radio waves instead of through wires or cables.
- radiotelephony — the constructing or operating of radiotelephones.
- radiotherapist — radiologist