| aminopherase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminotransferase, transaminase |
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| apheresis | (noun) a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion | Synonyms: pheresis |
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| (noun) (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until' | Synonyms: aphaeresis |
| asthenosphere | (noun) the lower layer of the crust | - |
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| atmosphere | (noun) a distinctive but intangible quality surrounding a person or thing | Synonyms: air, aura |
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| (noun) the mass of air surrounding the Earth | Synonyms: air |
| (noun) the envelope of gases surrounding any celestial body | - |
| (noun) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade | Synonyms: atm, standard atmosphere, standard pressure |
| (noun) the weather or climate at some place | Synonyms: atmospheric state |
| (noun) a particular environment or surrounding influence | Synonyms: ambiance, ambience |
| atmospherics | (noun) a crackling or hissing noise caused by electrical interference | Synonyms: atmospheric static, static |
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| autobiographer | (noun) someone who writes their own biography | - |
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| bathysphere | (noun) spherical deep diving apparatus (lowered by a cable) for underwater exploration | - |
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| bibliographer | (noun) someone trained in compiling bibliographies | - |
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| biographer | (noun) someone who writes an account of a person's life | - |
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| biosphere | (noun) the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist | - |
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| blastosphere | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastula |
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| calligrapher | (noun) someone skilled in penmanship | Synonyms: calligraphist |
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| cartographer | (noun) a person who makes maps | Synonyms: map maker |
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| choreographer | (noun) someone who creates new dances | - |
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| chromosphere | (noun) a gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun | - |
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| cinematographer | (noun) a photographer who operates a movie camera | Synonyms: camera operator, cameraman |
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| cipher | (noun) a secret method of writing | Synonyms: cryptograph, cypher, secret code |
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| (noun) a message written in a secret code | Synonyms: cypher |
| (noun) a person of no influence | Synonyms: cypher, nobody, nonentity |
| (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cypher, goose egg, nada, naught, nil, nix, nothing, null, zero, zilch, zip, zippo |
| (noun) a mathematical element that when added to another number yields the same number | Synonyms: 0, cypher, nought, zero |
| cosmographer | (noun) a scientist knowledgeable about cosmography | Synonyms: cosmographist |
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| cryptographer | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptanalyst, cryptologist |
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| crystallographer | (noun) a specialist in crystallography | - |
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| cypher | (noun) a secret method of writing | Synonyms: cipher, cryptograph, secret code |
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| (noun) a message written in a secret code | Synonyms: cipher |
| (noun) a person of no influence | Synonyms: cipher, nobody, nonentity |
| (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cipher, goose egg, nada, naught, nil, nix, nothing, null, zero, zilch, zip, zippo |
| (noun) a mathematical element that when added to another number yields the same number | Synonyms: 0, cipher, nought, zero |
| decipherer | (noun) a reader capable of reading and interpreting illegible or obscure text | - |
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| (noun) the kind of intellectual who converts messages from a code to plain text | Synonyms: decoder |
| decipherment | (noun) the activity of making clear or converting from code into plain text | Synonyms: decoding, decryption |
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| demographer | (noun) a scientist who studies the growth and density of populations and their vital statistics | Synonyms: demographist, population scientist |
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| diapheromera | (noun) a variety of stick insect | Synonyms: Diapheromera femorata |
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| ethnographer | (noun) an anthropologist who does ethnography | - |
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| exosphere | (noun) the outermost atmospheric layer | - |
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| geographer | (noun) an expert on geography | - |
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| geosphere | (noun) the solid part of the earth consisting of the crust and outer mantle | Synonyms: lithosphere |
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| gopher | (noun) burrowing rodent of the family Geomyidae having large external cheek pouches; of Central America and southwestern North America | Synonyms: pocket gopher, pouched rat |
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| (noun) burrowing edible land tortoise of southeastern North America | Synonyms: gopher tortoise, gopher turtle, Gopherus polypemus |
| (noun) any of various terrestrial burrowing rodents of Old and New Worlds; often destroy crops | Synonyms: ground squirrel, spermophile |
| (noun) a zealously energetic person (especially a salesman) | Synonyms: goffer |
| gopherwood | (noun) small handsome roundheaded deciduous tree having showy white flowers in terminal clusters and heavy hardwood yielding yellow dye | Synonyms: Cladrastis kentukea, Cladrastis lutea, Kentucky yellowwood |
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| hagiographer | (noun) the author of a worshipful or idealizing biography | Synonyms: hagiographist, hagiologist |
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| heliosphere | (noun) the region inside the heliopause containing the sun and solar system | - |
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| hemisphere | (noun) either half of the cerebrum | Synonyms: cerebral hemisphere |
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| (noun) half of the terrestrial globe | - |
| (noun) half of a sphere | - |
| historiographer | (noun) a person who is an authority on history and who studies it and writes about it | Synonyms: historian |
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| hydrosphere | (noun) the watery layer of the earth's surface; includes water vapor | - |
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| ionosphere | (noun) the outer region of the Earth's atmosphere; contains a high concentration of free electrons | - |
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| lexicographer | (noun) a compiler or writer of a dictionary; a student of the lexical component of language | Synonyms: lexicologist |
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| lithographer | (noun) a printmaker who uses lithography | - |
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| lithosphere | (noun) the solid part of the earth consisting of the crust and outer mantle | Synonyms: geosphere |
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| magnetosphere | (noun) the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field | - |
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| mesosphere | (noun) the atmospheric layer between the stratosphere and the thermosphere | - |
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| oceanographer | (noun) a scientist who studies physical and biological aspects of the seas | - |
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| oosphere | (noun) a gamete; used especially of lower plants | - |
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| ozonosphere | (noun) a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun | Synonyms: ozone layer |
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| paleographer | (noun) an archeologist skilled in paleography | Synonyms: paleographist |
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| paragrapher | (noun) a writer of paragraphs (as for publication on the editorial page of a newspaper) | - |
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| paraphernalia | (noun) equipment consisting of miscellaneous articles needed for a particular operation or sport etc. | Synonyms: appurtenance, gear |
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| peripheral | (noun) electronic equipment external to the circuit board that contains the CPU of a computer | Synonyms: computer peripheral, peripheral device |
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| periphery | (noun) the outside boundary or surface of something | Synonyms: fringe, outer boundary |
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| pheresis | (noun) a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion | Synonyms: apheresis |
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| pheromone | (noun) a chemical substance secreted externally by some animals (especially insects) that influences the physiology or behavior of other animals of the same species | - |
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| philosopher | (noun) a specialist in philosophy | - |
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| (noun) a wise person who is calm and rational; someone who lives a life of reason with equanimity | - |
| photographer | (noun) someone who takes photographs professionally | Synonyms: lensman |
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| photosphere | (noun) the intensely luminous surface of a star (especially the sun) | - |
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| plasmapheresis | (noun) plasma is separated from whole blood and the rest is returned to the donor | - |
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| plateletpheresis | (noun) platelets are separated from whole blood and the rest is returned to the donor | - |
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| pornographer | (noun) someone who presents shows or sells writing or pictures that are sexually explicit in violation of the community mores | Synonyms: porn merchant |
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| pyrographer | (noun) an artist who practices pyrography | - |
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| radiographer | (noun) a person who makes radiographs | - |
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| sheepherder | (noun) a herder of sheep (on an open range); someone who keeps the sheep together in a flock | Synonyms: sheepman, shepherd |
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| shepherd | (noun) a herder of sheep (on an open range); someone who keeps the sheep together in a flock | Synonyms: sheepherder, sheepman |
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| (noun) a clergyman who watches over a group of people | - |
| shepherdess | (noun) a woman shepherd | - |
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| sphere | (noun) any spherically shaped artifact | - |
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| (noun) a particular aspect of life or activity | Synonyms: sector |
| (noun) the geographical area in which one nation is very influential | Synonyms: sphere of influence |
| (noun) the apparent surface of the imaginary sphere on which celestial bodies appear to be projected | Synonyms: celestial sphere, empyrean, firmament, heavens, vault of heaven, welkin |
| (noun) a solid figure bounded by a spherical surface (including the space it encloses) | - |
| (noun) a three-dimensional closed surface such that every point on the surface is equidistant from the center | - |
| (noun) a particular environment or walk of life | Synonyms: area, arena, domain, field, orbit |
| sphericalness | (noun) the roundness of a 3-dimensional object | Synonyms: globosity, globularness, rotundity, rotundness, sphericity |
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| sphericity | (noun) the roundness of a 3-dimensional object | Synonyms: globosity, globularness, rotundity, rotundness, sphericalness |
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| spherocyte | (noun) an abnormal spherical red blood cell | - |
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| spheroid | (noun) a shape that is generated by rotating an ellipse around one of its axes | Synonyms: ellipsoid of revolution |
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| spherometer | (noun) a measuring instrument for measuring the curvature of a surface | - |
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| spherule | (noun) a small sphere | - |
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| stenographer | (noun) someone skilled in the transcription of speech (especially dictation) | Synonyms: amanuensis, shorthand typist |
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| stratosphere | (noun) the atmospheric layer between the troposphere and the mesosphere | - |
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| telegrapher | (noun) someone who transmits messages by telegraph | Synonyms: telegraph operator, telegraphist |
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| telpher | (noun) one of the conveyances (or cars) in a telpherage | Synonyms: telfer |
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| telpherage | (noun) a transportation system in which cars (telphers) are suspended from cables and operated on electricity | Synonyms: telferage |
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| thermosphere | (noun) the atmospheric layer between the mesosphere and the exosphere | - |
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| tocopherol | (noun) a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body | Synonyms: E, vitamin E |
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| troposphere | (noun) the lowest atmospheric layer; from 4 to 11 miles high (depending on latitude) | - |
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| typographer | (noun) one who sets written material into type | Synonyms: compositor, setter, typesetter |
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