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1. WordNet® 3.0 (2006)
    n 1: a heavy silvery toxic univalent and bivalent metallic
         element; the only metal that is liquid at ordinary
         temperatures [syn: mercury, quicksilver, hydrargyrum,
         Hg, atomic number 80]

2. The Collaborative International Dictionary of English v.0.48
Hydrargyrum \Hy*drar"gy*rum\ (h[-i]*dr[aum]r"j[i^]*r[u^]m), n.
   [NL., fr. L. hydrargyrus, Gr. "ydra`rgyros; "y`dwr water +
   'a`rgyros silver.] (Chem.)
   Quicksilver; mercury.
   [1913 Webster]

3. The Collaborative International Dictionary of English v.0.48
Element \El"e*ment\, n. [F. ['e]l['e]ment, L. elementum.]
   1. One of the simplest or essential parts or principles of
      which anything consists, or upon which the constitution or
      fundamental powers of anything are based.
      [1913 Webster]

   2. One of the ultimate, undecomposable constituents of any
      kind of matter. Specifically: (Chem.) A substance which
      cannot be decomposed into different kinds of matter by any
      means at present employed; as, the elements of water are
      oxygen and hydrogen.
      [1913 Webster]

   Note: The elements are naturally classified in several
         families or groups, as the group of the alkaline
         elements, the halogen group, and the like. They are
         roughly divided into two great classes, the metals, as
         sodium, calcium, etc., which form basic compounds, and
         the nonmetals or metalloids, as oxygen, sulphur,
         chlorine, which form acid compounds; but the
         distinction is only relative, and some, as arsenic,
         tin, aluminium, etc., form both acid and basic
         compounds. The essential fact regarding every element
         is its relative atomic number, which is equal to the
         number of protons in the nucleus, and also equal to the
         number of electrons in orbitals around the nucleus when
         the atom is neutral. When the elements are tabulated in
         the order of their ascending atomic numbers, the
         arrangement constitutes the series of the Periodic law
         of Mendelejeff. See Periodic law, under Periodic.
         This Periodic law enables us to predict the qualities
         of unknown elements. The number of elements known in
         1890 were about seventy-five, but at that time the gaps
         in the Periodic law indicated the possibility of many
         more. All of the elements up to atomic number 100 have
         now been observed though some are radioactive and very
         unstable, and in some cases cannot be accumulated in
         quantity sufficient to actually see by eye. The
         properties predicted by the periodic law wre close to
         the observed properties in many cases. Additional
         unstable elements of atomic number over 100 are
         observed from time to time, prepared in cyclotrons,
         particle acclerators, or nuclear reactors, and some of
         their properties are measurable by careful observation
         of microscopic quantities, as few as several atoms. For
         such unstable elements, the properties are now
         predicted primarily by calculations based on quantum
         mechanics. Such theories suggest that there may be an
         "island" of relative stability of elements of atomic
         number over 120, but this has yet to be confirmed by
         Many of the elements with which we are familiar, as
         hydrogen, carbon, iron, gold, etc., have been
         recognized, by means of spectrum analysis, in the sun
         and the fixed stars. The chemical elements are now
         known not be simple bodies, but only combinations of
         subatomic particles such as protons, neutrons, and
         electrons; ahd protons and neutrons are now believed to
         be themselves combinations of quarks, particles which
         are not observed singly, but only in combinations.
         In formulas, the elements are designated by
         abbreviations of their names in Latin or New Latin,
         given in the table below. The atomic weights given in
         the table below are the

   chemical atomic weights, in some cases being the weighted
      average of the atomic weights of individual isotopes, each
      having a different atomic weight. The atomic weight of the
      individual isotopes are called the physical atomic
      weights. In those few cases where there is only one stable
      isotope of an element, the chemical and physical atomic
      weights are the same. The mass-spectrometric atomic
      weights are those used for careful mass-spectrometric
      measurements. For more details about individual elements,
      see the element names in the vocabulary The Elements
      Name |Sym-| Atomic Weight |
      |bol | O=16 | H=1 | C=12.000
      Aluminum | Al | 27.1 | 26.9 |
      Antimony (Stibium) | Sb | 120 | 119.1 |
      Argon | A | 39.9 | 39.6 |
      Arsenic | As | 75 | 74.4 |
      Astatine | At |
      Barium | Ba | 137.4 | 136.4 |
      Beryllium | Be |
      Bismuth | Bi | 208.5 | 206.9 |
      Boron | B | 11 | 10.9 |
      Bromine | Br | 79.96 | 79.36|
      Cadmium | Cd | 112.4 | 111.6 |
      Cesium (Caesium) | Cs | 133 | 132 |
      Calcium | Ca | 40 | 39.7 |
      Carbon | C | 12 | 11.91| 12.000
      Cerium | Ce | 140 | 139 |
      Chlorine | Cl | 35.45 | 35.18|
      Chromium | Cr | 52.1 | 51.7 |
      Cobalt | Co |
      Columbium (see Beryllium)
      Copper | Cu |
      Erbium | Er |
      Europium | Eu |
      Einsteinium | Es |
      Fermium | Fe |
      Fluorine | F |
      Gadolinium | Gd |
      Gallium | Ga |
      Germanium | Ge |
      Glucinum (now Beryllium)
      Gold (Aurum) | Au |
      Helium | He |
      Hydrogen | H |
      Indium | In |
      Iodine | I |
      Iridium | Ir |
      Iron | Fe |
      Krypton | Kr |
      Lanthanum | La |
      Lead | Pb |
      Lithium | Li |
      Magnesium | Mg |
      Manganese | Mn |
      Mercury | Hg |
      Molybdenum | Mo |
      Neodymium | Nd |
      Neon | Ne |
      Nickel | Ni |
      Niobium | Nb |
      (see Columbium)
      Nitrogen | N |
      Osmium | Os |
      Oxygen | O |
      Palladium | Pd |
      Phosphorus | P |
      Platinum | Pt |
      Potassium | K |
      Praseodymium | Pr |
      Rhodium | Rh |
      Rubidium | Rb |
      Ruthenium | Ru |
      Samarium | Sa |
      Scandium | Sc |
      Selenium | Se |
      Silicon | Si |
      Silver | Ag |
      Sodium | Na |
      Strontium | Sr |
      Sulphur | S |
      Tantalum | Ta |
      Tellurium | Te |
      Thallium | Tl |
      Thorium | Th |
      Thulium | Tu |
      Tin | Sn |
      Titanium | Ti |
      Tungsten | W |
      Uranium | U |
      Vanadium | V |
      Wolfranium (see Tungsten)
      Xenon | X |
      Ytterbium | Yb |
      Yttrium | Y |
      Zinc | Zn |
      Zirconium | Zr |
      [1913 Webster]

   Note: Several other elements have been announced, as holmium,
         vesbium, austrium, etc., but their properties, and in
         some cases their existence, have not yet been
         definitely established.
         [1913 Webster]

   3. One of the ultimate parts which are variously combined in
      anything; as, letters are the elements of written
      language; hence, also, a simple portion of that which is
      complex, as a shaft, lever, wheel, or any simple part in a
      machine; one of the essential ingredients of any mixture;
      a constituent part; as, quartz, feldspar, and mica are the
      elements of granite.
      [1913 Webster]

            The simplicity which is so large an element in a
            noble nature was laughed to scorn.    --Jowett
      [1913 Webster]

      (a) One out of several parts combined in a system of
          aggregation, when each is of the nature of the whole;
          as, a single cell is an element of the honeycomb.
      (b) (Anat.) One of the smallest natural divisions of the
          organism, as a blood corpuscle, a muscular fiber.
          [1913 Webster]

   5. (Biol.) One of the simplest essential parts, more commonly
      called cells, of which animal and vegetable organisms, or
      their tissues and organs, are composed.
      [1913 Webster]

   6. (Math.)
      (a) An infinitesimal part of anything of the same nature
          as the entire magnitude considered; as, in a solid an
          element may be the infinitesimal portion between any
          two planes that are separated an indefinitely small
          distance. In the calculus, element is sometimes used
          as synonymous with differential.
      (b) Sometimes a curve, or surface, or volume is considered
          as described by a moving point, or curve, or surface,
          the latter being at any instant called an element of
          the former.
      (c) One of the terms in an algebraic expression.
          [1913 Webster]

   7. One of the necessary data or values upon which a system of
      calculations depends, or general conclusions are based;
      as, the elements of a planet's orbit.
      [1913 Webster]

   8. pl. The simplest or fundamental principles of any system
      in philosophy, science, or art; rudiments; as, the
      elements of geometry, or of music.
      [1913 Webster]

   9. pl. Any outline or sketch, regarded as containing the
      fundamental ideas or features of the thing in question;
      as, the elements of a plan.
      [1913 Webster]

   10. One of the simple substances, as supposed by the ancient
       philosophers; one of the imaginary principles of matter.
       (a) The four elements were, air, earth, water, and fire;

   Note: whence it is said, water is the proper element of
         fishes; air is the element of birds. Hence, the state
         or sphere natural to anything or suited for its
         [1913 Webster]

               Of elements
               The grosser feeds the purer: Earth the Sea;
               Earth and the Sea feed Air; the Air those Fires
               Ethereal.                          --Milton.
         [1913 Webster]

               Does not our life consist of the four elements?
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               And the complexion of the element [i. e.,the sky
               or air]
               In favor's like the work we have in hand,
               Most bloody, fiery, and most terrible. --Shak.
         [1913 Webster]

               About twelve ounces [of food], with mere element
               for drink.                         --Cheyne.
         [1913 Webster]

               They show that they are out of their element.
                                                  --T. Baker.
         Esp., the conditions and movements of the air. "The
         elements be kind to thee."
       (b) The elements of the alchemists were salt, sulphur,
           and mercury. --Brande & C.
           [1913 Webster]

   11. pl. The whole material composing the world.
       [1913 Webster]

             The elements shall melt with fervent heat. --2
                                                  Peter iii. 10.
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   12. pl. (Eccl.) The bread and wine used in the eucharist or
       Lord's supper.
       [1913 Webster]

   Magnetic element, one of the hypothetical elementary
      portions of which a magnet is regarded as made up.
      [1913 Webster]

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