14-letter words containing p, y, t, h
- phonochemistry — the branch of chemistry concerned with the chemical effects of sound and ultrasonic waves
- phosphorolytic — of or relating to phosphorolysis
- photocatalysis — the acceleration or retardation of the reaction rate in chemical reactions by light.
- photocatalytic — the acceleration or retardation of the reaction rate in chemical reactions by light.
- photochemistry — the branch of chemistry that deals with the chemical action of light.
- photogrammetry — the process of making surveys and maps through the use of photographs, especially aerial photographs.
- photolytically — in a photolytic manner, by photolytic means
- photosynthesis — the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.
- photosynthetic — the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.
- 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.
- phytochemistry — the branch of biochemistry dealing with plants and plant processes.
- phytogeography — the science dealing with the geographical relationships of plants.
- phytopathology — plant pathology.
- phytosociology — the branch of ecology dealing with the origin, composition, structure, and classification of plant communities.
- pie in the sky — pie1 (def 8).
- piezochemistry — the study of chemical reactions at high pressures
- pigs might fly — If you say 'pigs might fly' after someone has said that something might happen, you are emphasizing that you think it is very unlikely.
- pitch cylinder — (in a gear or rack) an imaginary surface forming a plane (pitch plane) a cylinder (pitch cylinder) or a cone or frustrum (pitch cone) that moves tangentially to a similar surface in a meshing gear so that both surfaces travel at the same speed.
- platycephalous — flat-headed
- play hell with — to throw into confusion and disorder; disrupt
- play the field — an expanse of open or cleared ground, especially a piece of land suitable or used for pasture or tillage.
- play with fire — a state, process, or instance of combustion in which fuel or other material is ignited and combined with oxygen, giving off light, heat, and flame.
- plethysmograph — a device for measuring and recording changes in the volume of the body or of a body part or organ.
- plymouth sound — an inlet of the English Channel in SW Devon, SW England
- polygraph test — a test carried out using a polygraph, esp used by the police to try to find out whether somebody is telling the truth
- polysynthesism — the synthesis of various elements.
- porphyrization — reduction to a powder, formerly done on a slab of porphyry.
- porphyrogenite — a prince born after his father has succeeded to the throne
- port authority — a government commission that manages bridges, tunnels, airports, and other such facilities of a port or city.
- primal therapy — a form of psychotherapy in which the patient is encouraged to relive traumatic events, often screaming or crying, in order to achieve catharsis and a breakdown of psychological defenses.
- primary growth — growth in vascular plants, especially an increase in length, that results from cell division and differentiation of an apical meristem.
- property right — a legal right to or in a particular property.
- prosthetically — a device, either external or implanted, that substitutes for or supplements a missing or defective part of the body.
- protoporphyrin — a type of porphyrin that, when combined with an iron atom, forms haem, the oxygen-bearing prosthetic group of the red blood pigment haemoglobin
- psycho-history — history or the writing of history employing the techniques of psychoanalysis to explore motivations, explain actions, etc.
- 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.
- psychogenetics — the study of internal or mental states
- psychosomatics — the study of psychosomatic conditions
- psychotechnics — the use of psychological techniques for controlling and modifying human behavior, especially for practical ends.
- pterylographic — relating to pterylography
- pyelonephritic — of or relating to an inflammation of the pelvis and renal parenchyma
- pyelonephritis — inflammation of the kidney and its pelvis, caused by a bacterial infection.
- pyophthalmitis — suppurative inflammation of the eye.
- pyriphlegethon — Phlegethon (def 1).
- pyrophotograph — a photograph produced by a burning process, such as on glass or porcelain
- pyrophotometer — a form of pyrometer that measures temperature by optical or photometric means.
- pyrotechnician — a specialist in the origin of fires, their nature and control, etc.