| photodermatitis | Dermatitis caused or elicited by exposure to sunlight; may be phototoxic or photoallergic, and can result from topical application, ingestion, inhalation, or injection of mediating phototoxic or photoallergic material. See: photosensitization. Synonym: actinic dermatitis, actinodermatitis. Origin: photo-+ G. Derma, skin, + -itis, inflammation (05 Mar 2000) |
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| photodistribution | Areas on the skin that receive the greatest amount of exposure to sunlight, and which are involved in eruptions due to photosensitivity. (05 Mar 2000) |
| photodrome | <physics> An apparatus consisting of a large wheel with spokes, which when turning very rapidly is illuminated by momentary flashes of light passing through slits in a rotating disk. By properly timing the succession of flashes the wheel is made to appear to be motionless, or to rotate more or less slowly in either direction. Origin: Photo- + Gr. To run. Source: Websters Dictionary (01 Mar 1998) |
| photodromy | In the induced or spontaneous clarification of certain suspensions, the settlement of particles on the side nearest the light (positive photodromy) or on the dark side (negative photodromy). Origin: photo-+ G. Dromos, a running (05 Mar 2000) |
| photodynamic | Relating to the energy or force exerted by light. Origin: photo-+ G. Dynamis, force (05 Mar 2000) |
| photodynamic radiation therapy | <oncology, technique> A light sensitive drug is given through a vein and concentrates in the tumour. Then, during a surgical procedure, a special light activates the drug. The activated drug kills tumour cells. (31 Dec 1997) |
| photodynamic sensitization | The action by which certain substances, notably fluorescing dyes (acridine, eosin, methylene blue, rose bengal) absorb visible light and emit the energy at wavelengths that are deleterious to microbes or other organisms in the dye-containing suspension, or selectively destroy cancer cells sensitised by intravenous porphyrin and exposed to red laser light. Synonym: photosensitization. (05 Mar 2000) |
| photodynamic therapy | <oncology, technique> Cancer treatment that uses the interaction between laser light and a substance that makes cells more sensitive to light. When light is applied to cells that have been treated with this substance, a chemical reaction occurs and destroys cancer cells. (31 Dec 1997) |
| photodynesis | <cell biology> Initiation of cytoplasmic streaming by light. Uncommon usage. (18 Nov 1997) |
| photodynia | Synonym: photalgia. Origin: photo-+ G. Odyne, pain (05 Mar 2000) |
| photodysphoria | Extreme photophobia. Origin: photo-+ G. Dysphoria, extreme discomfort (05 Mar 2000) |
| photoelectric | <physics> Acting by the operation of both light and electricity. Said of apparatus for producing pictures by electric light or electronic effects produced by the action of light. See: photoelectric effect, photoelectric absorption. (21 Jun 2000) |
| photoelectric absorption | <chemistry, physics> The interaction of an X-ray photon with matter in which the incident photon is completely absorbed, giving up all its energy by displacing an outer shell electron. (05 Mar 2000) |
| photoelectric effect | <chemistry, radiobiology> The interaction of a photon with an atom, resulting in the absorption of the incident photon and the release of a bound electron from that atom with energy equal to the photon energy less the electron binding energy. (16 Dec 1997) |
| photoelectrometer | A device employing a photoelectric cell for measuring the concentration of substances in solution. (05 Mar 2000) |
Synonyms :
Synonyms : Photoperiods
Synonyms : Extracorporeal Photochemotherapies, Photochemotherapies, Extracorporeal, Photopheresis, Extracorporeal
Synonyms : Light Sensitivities, Photophobias, Sensitivities, Light, Sensitivity, Light
Synonyms : Photosynthetic Phosphorylation, Phosphorylation, Photosynthetic, Phosphorylations, Photosynthetic, Photophosphorylations, Photosynthetic Phosphorylations
| photosynthetic |
relating to or using or formed by photosynthesis
출처: wordnet.princeton.edu/perl/webwn
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| phot |
a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux
출처: wordnet.princeton.edu/perl/webwn
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| photalgia |
pain in the eye resulting from exposure to bright light (often associated with albinism)
출처: wordnet.princeton.edu/perl/webwn
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| photic |
of or relating to or caused by light
출처: wordnet.princeton.edu/perl/webwn
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| photochemistry |
branch of chemistry that deals with the chemical action of light
출처: wordnet.princeton.edu/perl/webwn
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| phot | of or relating to photoemission |
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| phot | an engraving used to reproduce an illustration |
| phot | a lamp for providing momentary light to take a photograph |
| phot | light that is a source of artificial illumination having a broad beam |
| phot | a kind of color printing, used for the finest facsimile reproductions of works of art |
| phot | looking attractive in photographs |
| phot | reflex epilepsy induced by a flickering light |
| phot | a picture of a person or scene in the form of a print or transparent slide |
| phot | record on photographic film"I photographed the scene of the accident" |
| phot | undergo being photographed in a certain way |
| phot | an album for photographs |
| phot | someone who takes photographs professionally |