13-letter words containing s, c, h, i
- pitch surface — (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.
- plain-clothes — Plain-clothes police officers wear ordinary clothes instead of a police uniform.
- pocket chisel — any woodworking chisel having a blade of medium length.
- poison sumach — an anacardiaceous swamp shrub, Rhus (or Toxicodendron) vernix of the southeastern US, that has greenish-white berries and causes an itching rash on contact with the skin
- polished rice — white rice polished or buffed by leather-covered cylinders during processing.
- polysynthetic — (of a language) characterized by a prevalence of relatively long words containing a large number of affixes to express syntactic relationships and meanings. Many American Indian languages are polysynthetic. Compare analytic (def 3), synthetic (def 3).
- porcupinefish — any of several fishes of the family Diodontidae, especially Diodon hystrix, of tropical seas, capable of inflating the body with water or air until it resembles a globe, with erection of the long spines covering the skin.
- pre christmas — the annual festival of the Christian church commemorating the birth of Jesus: celebrated on December 25 and now generally observed as a legal holiday and an occasion for exchanging gifts.
- pre-christian — of, relating to, or belonging to a time or period before the Christian Era.
- pre-christmas — the annual festival of the Christian church commemorating the birth of Jesus: celebrated on December 25 and now generally observed as a legal holiday and an occasion for exchanging gifts.
- preanesthetic — a substance that produces a preliminary or light anesthesia.
- preceptorship — an instructor; teacher; tutor.
- principalship — first or highest in rank, importance, value, etc.; chief; foremost.
- promonarchist — the principles of monarchy.
- prosectorship — the position or responsibility of a prosector
- protectorship — a person or thing that protects; defender; guardian.
- pseudo-heroic — Also, heroical. of, relating to, or characteristic of a hero or heroine.
- psilanthropic — relating to psilanthropism
- psychasthenia — Psychiatry. (no longer in technical use) a neurosis marked by fear, anxiety, phobias, etc.
- psychasthenic — a person who has psychasthenia
- psychobiology — the use of biological methods to study normal and abnormal emotional and cognitive processes, as the anatomical basis of memory or neurochemical abnormalities in schizophrenia.
- psychodynamic — Psychology. any clinical approach to personality, as Freud's, that sees personality as the result of a dynamic interplay of conscious and unconscious factors.
- psychogenesis — genesis of the psyche.
- psychogenetic — genesis of the psyche.
- psychographic — Psychology. a graph indicating the relative strength of the personality traits of an individual.
- psychohistory — history or the writing of history employing the techniques of psychoanalysis to explore motivations, explain actions, etc.
- psychokinesis — the purported ability to move or deform inanimate objects, as metal spoons, through mental processes.
- psychological — of or relating to psychology.
- psychometrics — the measurement of mental traits, abilities, and processes.
- psychomimetic — psychotomimetic.
- psychophysics — the branch of psychology that deals with the relationships between physical stimuli and resulting sensations and mental states.
- psychosomatic — of or relating to a physical disorder that is caused by or notably influenced by emotional factors.
- psychotically — Psychiatry. characterized by or afflicted with psychosis. Synonyms: (in nontechnical usage) insane, psychopathic, lunatic, mentally ill; mad, disturbed, deranged, demented, non compos mentis. Antonyms: sane; compos mentis, clearheaded, lucid.
- psychotogenic — a substance that causes a psychotic reaction.
- psychrometric — relating to psychrometry
- psychrophilic — (esp of bacteria) showing optimum growth at low temperatures
- public school — (in the U.S.) a school that is maintained at public expense for the education of the children of a community or district and that constitutes a part of a system of free public education commonly including primary and secondary schools.
- quadraphonics — high-fidelity sound reproduction involving signals transmitted through four different channels.
- quadriphonics — quadraphony.
- rayleigh disc — a small light disc suspended in the path of a sound wave, used to measure the intensity of the sound by analysing the resulting deflection of the disc
- recovery ship — a naval vessel designed to participate in the retrieval of a satellite, instrument package, or spaceship after it has re-entered the atmosphere and landed in the ocean
- reichspfennig — a former bronze coin of Germany, the 100th part of a reichsmark.
- reprographics — reprography.
- resynchronize — to synchronize again
- rhinoscleroma — an inflammatory bacterial disease of the nose that is mostly found in Africa and Central America
- rhodochrosite — a mineral, manganese carbonate, MnCO 3 , commonly containing some iron and calcium, and usually rose-red in color: a minor ore of manganese; manganese spar.
- richter scale — a scale, ranging from 1 to 10, for indicating the intensity of an earthquake.
- riding school — a place where equitation is taught.
- right section — a representation of an object as it would appear if cut by a plane perpendicular to its longest axis.
- rocking horse — a toy horse, as of wood, mounted on rockers or springs, on which children may ride; hobbyhorse.