15-letter words containing a, c, h, y
- paleogeophysics — (used with a plural verb) inferred geophysical conditions or processes of designated periods of the geologic past.
- paracetaldehyde — paraldehyde.
- parasympathetic — pertaining to that part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions and function in opposition to the sympathetic system, as in inhibiting heartbeat or contracting the pupil of the eye.
- parenthetically — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- pharmacotherapy — the treatment of disease through the administration of drugs.
- philosophically — of or relating to philosophy: philosophical studies.
- phonogramically — in a phonogramic manner
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.
- phototactically — in a phototactic manner
- phototropically — in a phototropic manner
- phrenologically — in a manner relating to phrenology
- physical change — a usually reversible change in the physical properties of a substance, as size or shape: Freezing a liquid is a physical change.
- physical memory — (memory management) The memory hardware (normally RAM) installed in a computer. The term is only used in contrast to virtual memory.
- physical optics — the branch of optics concerned with the wave properties of light, the superposition of waves, the deviation of light from its rectilinear propagation in a manner other than that considered by geometrical optics, the interaction of light with matter, and the quantum, corpuscular aspects of light.
- physicalization — to express in physical terms; give form or shape to: The dancers physicalized the mood of the music.
- physicochemical — physical and chemical: the physicochemical properties of an isomer.
- physiologically — of or relating to physiology.
- phytochemically — in a phytochemical manner
- phytopathogenic — of, possessing the properties of, or relating to a phytopathogen
- pied flycatcher — a small black and white migratory bird of Europe and western Asia, Ficedula hypoleuca
- play havoc with — bring chaos to
- polychlorinated — having multiple chlorine atoms
- polymorphically — in a polymorphic manner
- primary teacher — a teacher in a primary school
- psychedelically — of or noting a mental state characterized by a profound sense of intensified sensory perception, sometimes accompanied by severe perceptual distortion and hallucinations and by extreme feelings of either euphoria or despair.
- psychedelicware — /si:"k*-del"-ik-weir/ [UK] Synonym display hack. See also smoking clover.
- psychiatrically — the practice or science of diagnosing and treating mental disorders.
- psychoacoustics — the study of sound perception.
- psychobiography — a biographical study focusing on psychological factors, as childhood traumas and unconscious motives.
- psychodiagnosis — a psychological examination using psychodiagnostic techniques.
- psychogeriatric — the psychology of old age.
- psychographical — relating to psychographics
- psychohistorian — a person who writes psychohistory
- psychologically — of or relating to psychology.
- psychopathology — the science or study of mental disorders.
- psychotherapist — the treatment of psychological disorders or maladjustments by a professional technique, as psychoanalysis, group therapy, or behavioral therapy.
- puerto ayacucho — a city in S Venezuela, on the Orinoco River.
- pyrotechnically — in a pyrotechnical manner
- radiochemically — by radiochemical means or methods; from a radiochemical perspective
- radiotechnology — the technical application of any form of radiation to industry.
- rechargeability — (of a storage battery) capable of being charged repeatedly. Compare cordless (def 2).
- saccharomycetes — a collective name for yeasts
- salicylaldehyde — an oily, slightly water-soluble liquid, C 7 H 6 O 2 , having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.
- saprophytically — any organism that lives on dead organic matter, as certain fungi and bacteria.
- sarcenchymatous — relating to the connective tissue of some sponges
- scarlet lychnis — a plant, Lychnis chalcedonica, of the pink family, having scarlet or sometimes white flowers, the arrangement and shape of the petals resembling a Maltese cross.
- school holidays — the period during which schools are closed - in the summer, at Christmas and Easter, and at other times of the year
- security thread — a colored thread running through the paper of a piece of paper money, used to deter counterfeiting.
- security threat — a threat to the security of a country
- seven-year itch — scabies.