phospholipid | (noun) any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes | - |
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phosphoprotein | (noun) containing chemically bound phosphoric acid | - |
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phosphor | (noun) a synthetic substance that is fluorescent or phosphorescent; used to coat the screens of cathode ray tubes | - |
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phosphoresce | (verb) to exhibit phosphorescence | - |
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phosphorescence | (noun) a fluorescence that persists after the bombarding radiation has ceased | - |
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phosphorescent | (adjective) emitting light without appreciable heat as by slow oxidation of phosphorous | - |
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phosphoric | (adjective) containing or characteristic of phosphorus | Synonyms: phosphorous |
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phosphorous | (adjective) containing or characteristic of phosphorus | Synonyms: phosphoric |
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phosphorus | (noun) a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms | Synonyms: atomic number 15, P |
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phot | (noun) a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux | - |
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photalgia | (noun) pain in the eye resulting from exposure to bright light (often associated with albinism) | Synonyms: photophobia |
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photic | (adjective) of or relating to or caused by light | - |
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photo | (noun) a representation of a person or scene in the form of a print or transparent slide or in digital format | Synonyms: exposure, photograph, pic, picture |
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photobomb | (verb) to jump into someone's photo | - |
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photocathode | (noun) a cathode that emits electrons when illuminated | - |
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photocell | (noun) a transducer used to detect and measure light and other radiations | Synonyms: electric eye, magic eye, photoconductive cell, photoelectric cell |
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photochemical | (adjective) of or relating to or produced by the effects of light on chemical systems | - |
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photochemistry | (noun) branch of chemistry that deals with the chemical action of light | - |
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photocoagulation | (noun) surgical procedure that uses an intense laser beam to destroy diseased retinal tissue or to make a scar that will hold the retina in cases of detached retina | - |
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photocoagulator | (noun) surgical instrument containing a laser for use in photocoagulation | - |
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photoconduction | (noun) change in the electrical conductivity of a substance as a result of absorbing electromagnetic radiation | Synonyms: photoconductivity |
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photoconductive | (adjective) of or relating to photoconductivity | - |
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photoconductivity | (noun) change in the electrical conductivity of a substance as a result of absorbing electromagnetic radiation | Synonyms: photoconduction |
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photocopier | (noun) a copier that uses photographic methods of making copies | - |
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photocopy | (noun) a photographic copy of written or printed or graphic work | - |
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(verb) reproduce by xerography | Synonyms: run off, xerox |
photoelectric | (adjective) of or pertaining to photoelectricity | Synonyms: photoelectrical |
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photoelectrical | (adjective) of or pertaining to photoelectricity | Synonyms: photoelectric |
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photoelectrically | (adverb) by photoelectric means | - |
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photoelectricity | (noun) electricity generated by light or affected by light | - |
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photoelectron | (noun) an electron that is emitted from an atom or molecule by an incident photon | - |
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photoemission | (noun) an emission of photoelectrons (especially from a metallic surface) | - |
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photoemissive | (adjective) of or relating to photoemission | - |
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photoengraving | (noun) an engraving used to reproduce an illustration | Synonyms: halftone, halftone engraving |
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photoflash | (noun) a lamp for providing momentary light to take a photograph | Synonyms: flash, flash bulb, flash lamp, flashbulb, flashgun |
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photoflood | (noun) light that is a source of artificial illumination having a broad beam; used in photography | Synonyms: flood, flood lamp, floodlight |
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photogenic | (adjective) looking attractive in photographs | - |
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photograph | (noun) a representation of a person or scene in the form of a print or transparent slide or in digital format | Synonyms: exposure, photo, pic, picture |
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(verb) record on photographic film | Synonyms: shoot, snap |
(verb) undergo being photographed in a certain way | - |
photographer | (noun) someone who takes photographs professionally | Synonyms: lensman |
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photographic | (adjective) relating to photography or obtained by using photography | - |
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(adjective) representing people or nature with the exactness and fidelity of a photograph | - |
photographically | (adverb) by photographic means | - |
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photography | (noun) the act of taking and printing photographs | Synonyms: picture taking |
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(noun) the occupation of taking and printing photographs or making movies | - |
(noun) the process of producing images of objects on photosensitive surfaces | - |
photogravure | (noun) using photography to produce a plate for printing | Synonyms: rotogravure |
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(noun) an intaglio print produced by gravure | Synonyms: gravure, heliogravure |
(noun) printing from an intaglio plate prepared by photographic methods | - |
photoheliograph | (noun) a telescope, with a camera attached, used to photograph the Sun. | - |
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photojournalism | (noun) journalism that presents a story primarily through the use of pictures | - |
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photojournalist | (noun) a journalist who presents a story primarily through the use of photographs | - |
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photolithograph | (noun) a lithograph produced by photographically produced plates | - |
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photolithography | (noun) a planographic printing process using plates made from a photographic image | - |
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photomechanical | (adjective) of or relating to or involving various methods of using photography to make plates for printing | - |
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photomechanics | (noun) the technique of using photomechanical methods to make photographs into plates for printing | - |
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(noun) the process whereby printing surfaces (plates or cylinders) are produced by photographic methods | Synonyms: photoplate making |
photometer | (noun) photographic equipment that measures the intensity of light | Synonyms: exposure meter, light meter |
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(noun) measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source | - |
photometric | (adjective) of or relating to photometry | Synonyms: photometrical |
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photometrical | (adjective) of or relating to photometry | Synonyms: photometric |
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photometrically | (adverb) by photometric means | - |
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photometrician | (noun) someone who practices photometry | Synonyms: photometrist |
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photometrist | (noun) someone who practices photometry | Synonyms: photometrician |
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photometry | (noun) measurement of the properties of light (especially luminous intensity) | - |
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photomicrograph | (noun) a photograph taken with the help of a microscope | - |
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photomontage | (noun) a montage that uses photographic images | - |
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photomosaic | (noun) arrangement of aerial photographs forming a composite picture | Synonyms: arial mosaic, mosaic |
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photon | (noun) a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle | - |
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photophobia | (noun) pain in the eye resulting from exposure to bright light (often associated with albinism) | Synonyms: photalgia |
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(noun) a morbid fear of light | - |
photopigment | (noun) a special pigment found in the rods and cones of the retina | - |
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photoretinitis | (noun) damage to the retina resulting from exposure of the eye to the sun without adequate protection | - |
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photosensitise | (verb) make (an organism or substance) sensitive to the influence of radiant energy and especially light | Synonyms: photosensitize |
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photosensitive | (adjective) sensitive to visible light | Synonyms: light-sensitive |
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photosensitivity | (noun) sensitivity to the action of radiant energy | Synonyms: radiosensitivity |
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photosensitize | (verb) make (an organism or substance) sensitive to the influence of radiant energy and especially light | Synonyms: photosensitise |
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photoshop | (verb) To digitally alter a photo | - |
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photosphere | (noun) the intensely luminous surface of a star (especially the sun) | - |
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photostat | (noun) a photocopy made on a Photostat machine | - |
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(verb) make a copy by means of a Photostat device | - |
photosynthesis | (noun) synthesis of compounds with the aid of radiant energy (especially in plants) | - |
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photosynthetic | (adjective) relating to or using or formed by photosynthesis | - |
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phototelegraph | (noun) an apparatus for transmitting pictures by phototelegraphy. | - |
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phototelegraphy | (noun) an early technology for the transmission of facsimiles. | - |
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phototherapy | (noun) the use of strong light to treat acne or hyperbilirubinemia of the newborn | - |
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phototropism | (noun) an orienting response to light | - |
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photovoltaic | (adjective) producing a voltage when exposed to radiant energy (especially light) | - |
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phragmacone | (noun) the thin conical chambered internal shell (either straight or curved) of a belemnite | Synonyms: phragmocone |
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phragmocone | (noun) the thin conical chambered internal shell (either straight or curved) of a belemnite | Synonyms: phragmacone |
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phrasal | (adjective) of or relating to or functioning as a phrase | - |
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phrase | (noun) dance movements that are linked in a single choreographic sequence | - |
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(noun) an expression consisting of one or more words forming a grammatical constituent of a sentence | - |
(noun) a short musical passage | Synonyms: musical phrase |
(noun) an expression whose meanings cannot be inferred from the meanings of the words that make it up | Synonyms: idiom, idiomatic expression, phrasal idiom, set phrase |
(verb) put into words or an expression | Synonyms: articulate, formulate, give voice, word |
(verb) divide, combine, or mark into phrases | - |
phraseology | (noun) the manner in which something is expressed in words | Synonyms: choice of words, diction, phrasing, verbiage, wording |
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phrasing | (noun) the grouping of musical phrases in a melodic line | - |
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(noun) the manner in which something is expressed in words | Synonyms: choice of words, diction, phraseology, verbiage, wording |
phratry | (noun) people descended from a common ancestor | Synonyms: family, family line, folk, kinfolk, kinsfolk, sept |
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phreatic | (adjective) of or relating to ground water | - |
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phrenetic | (adjective) excessively agitated; distraught with fear or other violent emotion | Synonyms: frantic, frenetic, frenzied |
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phrenic | (adjective) of or relating to the diaphragm | - |
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phrenitis | (noun) inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) | Synonyms: cephalitis, encephalitis |
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phrenological | (adjective) of or relating to phrenology | - |
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phrenologist | (noun) someone who claims to be able to read your character from the shape of your skull | Synonyms: craniologist |
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phrenology | (noun) a now abandoned study of the shape of skull as indicative of the strengths of different faculties | - |
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phrontistery | (noun) an establishment for study and learning (sometimes including modern universities) | - |
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phthisis | (noun) involving the lungs with progressive wasting of the body | Synonyms: consumption, pulmonary tuberculosis, wasting disease, white plague |
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phycobilin | (noun) water-soluble proteinaceous pigments found in red algae and cyanobacteria | - |
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phycocyanin | (noun) blue pigment in algae | - |
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phycoerythrin | (noun) red pigment in red algae | - |
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phycology | (noun) the branch of botany that studies algae | Synonyms: algology |
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phycomycosis | (noun) any fungal infection caused by fungi of the Phycomycetes group | - |
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phylactery | (noun) (Judaism) either of two small leather cases containing texts from the Hebrew Scriptures (known collectively as tefillin); traditionally worn (on the forehead and the left arm) by Jewish men during morning prayer | Synonyms: tefillin |
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phyle | (noun) a tribe of ancient Athenians | - |
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