| amphotericin | (noun) an antibiotic and antifungal agent | - |
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| antipsychotic | (noun) tranquilizer used to treat psychotic conditions when a calming effect is desired | Synonyms: antipsychotic agent, antipsychotic drug, major tranquilizer, major tranquilliser, major tranquillizer, neuroleptic, neuroleptic agent, neuroleptic drug |
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| buckshot | (noun) small lead shot for shotgun shells | Synonyms: bird shot, duck shot |
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| bullshot | (noun) a cocktail made with vodka and beef bouillon or consomme | - |
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| cholelithotomy | (noun) removal of gallstone through an incision in the gallbladder | - |
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| countershot | (noun) a return shot; a retaliatory shot | - |
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| cytophotometer | (noun) a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm | - |
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| cytophotometry | (noun) the study of chemical compounds inside a cell by means of a cytophotometer | - |
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| dhoti | (noun) a long loincloth worn by Hindu men | - |
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| dichotomisation | (noun) the act of dividing into two sharply different categories | Synonyms: dichotomization |
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| dichotomization | (noun) the act of dividing into two sharply different categories | Synonyms: dichotomisation |
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| dichotomy | (noun) being twofold; a classification into two opposed parts or subclasses | Synonyms: duality |
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| earshot | (noun) the range within which a voice can be heard | Synonyms: earreach, hearing |
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| eyeshot | (noun) the range of the eye | Synonyms: view |
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| gomphothere | (noun) extinct elephants of Central American and South America; of the Miocene and Pleistocene | - |
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| grapeshot | (noun) a cluster of small projectiles fired together from a cannon to produce a hail of shot | Synonyms: grape |
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| gunshot | (noun) the act of shooting a gun | Synonyms: gunfire |
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| headshot | (noun) a shot aimed at a person's head | - |
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| (noun) an attempt to put the soccer ball into the net by using the head | - |
| (noun) a photograph of a person's head | - |
| hotbed | (noun) a bed of earth covered with glass and heated by rotting manure to promote the growth of plants | - |
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| (noun) a situation that is ideal for rapid development (especially of something bad) | - |
| hotbox | (noun) a journal bearing (as of a railroad car) that has overheated | - |
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| hotcake | (noun) a flat cake of thin batter fried on both sides on a griddle | Synonyms: battercake, flannel-cake, flannel cake, flapcake, flapjack, griddlecake, hot cake, pancake |
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| hotchpotch | (noun) a stew (or thick soup) made with meat and vegetables | - |
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| (noun) a motley assortment of things | Synonyms: farrago, gallimaufry, hodgepodge, melange, mingle-mangle, mishmash, oddments, odds and ends, omnium-gatherum, ragbag |
| hotdog | (noun) a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll | Synonyms: dog, frank, frankfurter, hot dog, weenie, wiener, wienerwurst |
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| (noun) a frankfurter served hot on a bun | Synonyms: hot dog, red hot |
| (noun) someone who performs dangerous stunts to attract attention to himself | Synonyms: hot dog |
| hotel | (noun) a building where travelers can pay for lodging and meals and other services | - |
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| hotelier | (noun) an owner or manager of hotels | Synonyms: hosteller, hotel manager, hotelkeeper, hotelman |
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| hotelkeeper | (noun) an owner or manager of hotels | Synonyms: hosteller, hotel manager, hotelier, hotelman |
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| hotelman | (noun) an owner or manager of hotels | Synonyms: hosteller, hotel manager, hotelier, hotelkeeper |
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| hotfoot | (noun) a practical joke that involves inserting a match surreptitiously between the sole and upper of the victim's shoe and then lighting it | - |
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| hothead | (noun) a reckless impetuous irresponsible person | Synonyms: daredevil, harum-scarum, lunatic, madcap, swashbuckler |
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| (noun) a belligerent grouch | Synonyms: fire-eater |
| hothouse | (noun) a greenhouse in which plants are arranged in a pleasing manner | Synonyms: conservatory, indoor garden |
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| hotline | (noun) a telefone line that provides direct and prompt information or advice to the caller in relation to a specific subject | Synonyms: hot line |
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| hotness | (noun) the presence of heat | Synonyms: heat, high temperature |
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| (noun) a hot spiciness | Synonyms: pepperiness |
| (noun) a state of sexual arousal | Synonyms: horniness, hot pants |
| hotplate | (noun) a portable electric appliance for heating or cooking or keeping food warm | Synonyms: hot plate |
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| hotpot | (noun) a stew of meat and potatoes cooked in a tightly covered pot | Synonyms: hot pot |
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| hotshot | (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
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| hotspot | (noun) a lively entertainment spot | Synonyms: hot spot |
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| (noun) a point of relatively intense heat or radiation | Synonyms: hot spot |
| (noun) a place of political unrest and potential violence | Synonyms: flashpoint, hot spot, trouble spot |
| hotspur | (noun) a rash or impetuous person | - |
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| lithotomy | (noun) surgical removal of a stone (calculus) | - |
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| longshot | (noun) a photograph taken from a distance | - |
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| methotrexate | (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | Synonyms: amethopterin, methotrexate sodium |
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| microphotometer | (noun) special kind of densitometer that measures density variations over a very small area | - |
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| moonshot | (noun) an ambitious project with a high chance of failure | - |
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| mugshot | (noun) a photograph of someone's face (especially one made for police records) | Synonyms: mug shot |
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| opisthotonos | (noun) severe spasm in which the back arches and the head bends back and heels flex toward the back | - |
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| orchotomy | (noun) surgical incision into the testis to obtain material for analysis (as in cases of abnormally low sperm count) | - |
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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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| photographer | (noun) someone who takes photographs professionally | Synonyms: lensman |
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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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| 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 | - |
| 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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| photosensitivity | (noun) sensitivity to the action of radiant energy | Synonyms: radiosensitivity |
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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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| photosynthesis | (noun) synthesis of compounds with the aid of radiant energy (especially in plants) | - |
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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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| potshot | (noun) a shot taken at an easy or casual target (as by a pothunter) | - |
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| (noun) criticism aimed at an easy target and made without careful consideration | - |
| psychotherapeutics | (noun) the branch of psychiatry concerned with psychological methods | Synonyms: mental hygiene, psychotherapy |
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| psychotherapist | (noun) a therapist who deals with mental and emotional disorders | Synonyms: clinical psychologist |
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| psychotherapy | (noun) the treatment of mental or emotional problems by psychological means | - |
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| (noun) the branch of psychiatry concerned with psychological methods | Synonyms: mental hygiene, psychotherapeutics |
| psychotic | (noun) a person afflicted with psychosis | Synonyms: psycho, psychotic person |
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| pyrrhotine | (noun) a brownish iron sulfide mineral (FeS) having weak magnetic properties | Synonyms: magnetic pyrites, pyrrhotite |
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| pyrrhotite | (noun) a brownish iron sulfide mineral (FeS) having weak magnetic properties | Synonyms: magnetic pyrites, pyrrhotine |
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| radiophoto | (noun) a photograph transmitted by radio waves | Synonyms: radiophotograph |
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