15-letter words containing o, a, t, h, s
- ophthalmologist — a doctor of medicine specializing in ophthalmology.
- ophthalmoscopes — Plural form of ophthalmoscope.
- ophthalmoscopic — Of, pertaining to or using an ophthalmoscope.
- opisthognathous — having receding jaws.
- orchestrational — Of or pertaining to orchestration.
- organophosphate — Biochemistry. any of a variety of organic compounds that contain phosphorus and often have intense neurotoxic activity: originally developed as nerve gases, now widely used as insecticides and fire retardants.
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- overorchestrate — to compose or arrange excessively
- oyster toadfish — See under toadfish (def 1).
- panophthalmitis — the inflammation of all eye tissue
- panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
- parthenogenesis — development of an egg without fertilization.
- passport holder — a person who has a passport
- pathophysiology — the physiology of abnormal or diseased organisms or their parts; the functional changes associated with a disease or syndrome.
- personal growth — development as an individual
- pheasant coucal — a brown and black, red-eyed Australian bird, Centropus phasianinus, with a pheasantlike tail.
- phenakistoscope — an early form of a zoetrope in which figures are depicted in different poses around the edge of a disc. When the disc is spun, and the figures observed through the apertures around the edge of the disc, they appear to be moving
- phenomenalistic — the doctrine that phenomena are the only objects of knowledge or the only form of reality.
- phosphate group — the group or radical obtained by removal of one or more hydrogen atoms from phosphoric acid.
- phosphocreatine — a compound, C 4 H 1 0 O 5 N 3 P, found chiefly in muscle, formed by the enzymatic interaction of an organic phosphate and creatine, the breakdown of which provides energy for muscle contraction.
- phosphorylation — to introduce the phosphoryl group into (an organic compound).
- phosphorylative — of or relating to phosphorylation
- photodissociate — to split or break up molecules as a result of the absorption of photons
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.
- photojournalism — journalism in which photography dominates written copy, as in certain magazines.
- phototransistor — a transistor that amplifies current induced by photoconductivity.
- 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.
- physiopathology — pathophysiology.
- physiotherapist — physical therapy.
- pistachio green — a light or medium shade of yellow green.
- pithecanthropus — a former genus of extinct hominids whose members have now been assigned to the proposed species Homo erectus.
- plainclothesman — a police officer, especially a detective, who wears ordinary civilian clothes while on duty.
- plethysmography — the tracking of changes measured in bodily volume
- point-and-shoot — of or denoting a camera that does not require manual adjustment of shutter speed, focus, aperture, etc.
- polish notation — a logical notation that dispenses with the need for brackets by writing the logical constants as operators preceding their arguments
- pontine marshes — an area of W Italy, southeast of Rome: formerly malarial swamps, drained in 1932–34 after numerous attempts since 160 bc had failed
- port washington — a town on NW Long Island, in SE New York.
- posthemorrhagic — occurring after a haemorrhage
- potash feldspar — any of the feldspar minerals having the composition KAlSi 3 O 8 , as orthoclase.
- power macintosh — Power Mac
- probationership — the position of a probationer
- process heating — Process heating is heating, usually from steam, which is used to increase the temperature in a process vessel.
- propeller shaft — a shaft that transmits power from an engine to a propeller.
- protospatharius — (of the Byzantine empire) a high-ranking official in the imperial guard
- provost marshal — Army. an officer on the staff of a commander, charged with the maintaining of order and with other police functions within a command.
- pseudoarthrosis — a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united
- psychoacoustics — the study of sound perception.