English > chemical element: 1 sense > noun 1, substance| Meaning | Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter. |
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| Synonym | element |
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| Parts | atom | (physics and chemistry) the smallest component of an element having the chemical properties of the element |
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| Narrower | actinium, Ac, atomic number 89 | A radioactive element of the actinide series |
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| allotrope | A structurally different form of an element |
| argon, Ar, atomic number 18 | A colorless and odorless inert gas |
| arsenic, As, atomic number 33 | A very poisonous metallic element that has three allotropic forms |
| astatine, At, atomic number 85 | A highly unstable radioactive element (the heaviest of the halogen series) |
| bohrium, Bh, element 107, atomic number 107 | A transuranic element |
| boron, B, atomic number 5 | A trivalent metalloid element |
| bromine, Br, atomic number 35 | A nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens |
| carbon, C, atomic number 6 | An abundant nonmetallic tetravalent element occurring in three allotropic forms |
| chlorine, Cl, atomic number 17 | A common nonmetallic element belonging to the halogens |
| darmstadtium, Ds, element 110, atomic number 110 | A radioactive transuranic element |
| dubnium, Db, hahnium, element 105, atomic number 105 | A transuranic element |
| fluorine, F, atomic number 9 | A nonmetallic univalent element belonging to the halogens |
| germanium, Ge, atomic number 32 | A brittle / brittle grey crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors |
| hassium, Hs, element 108, atomic number 108 | A radioactive transuranic element |
| helium, He, atomic number 2 | A very light colorless element that is one of the six inert gasses |
| hydrogen, H, atomic number 1 | A nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas |
| iodine, iodin, I, atomic number 53 | A nonmetallic element belonging to the halogens |
| krypton, Kr, atomic number 36 | A colorless element that is one of the six inert gasses |
| lawrencium, Lr, atomic number 103 | A radioactive transuranic element synthesized from californium |
| meitnerium, Mt, element 109, atomic number 109 | A radioactive transuranic element |
| mendelevium, Md, Mv, atomic number 101 | A radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol) |
| metallic element, metal | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| neon, Ne, atomic number 10 | A colorless odorless gaseous element that give a red glow in a vacuum tube |
| nitrogen, N, atomic number 7 | A common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas |
| nobelium, No, atomic number 102 | A radioactive transuranic element synthesized by bombarding curium with carbon ions |
| noble gas, inert gas, argonon | Any of the chemically inert gaseous elements of the helium group in the periodic table |
| nonmetal | A chemical element lacking typical metallic properties |
| oxygen, O, atomic number 8 | A nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas |
| phosphorus, P, atomic number 15 | A multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells |
| plutonium, Pu, atomic number 94 | A solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons |
| radon, Rn, atomic number 86 | A radioactive gaseous element formed by the disintegration of radium |
| roentgenium, Rg, element 111, atomic number 111 | A radioactive transuranic element |
| rutherfordium, Rf, unnilquadium, Unq, element 104, atomic number 104 | A radioactive transuranic element which has been synthesized |
| seaborgium, Sg, element 106, atomic number 106 | A transuranic element |
| selenium, Se, atomic number 34 | A toxic nonmetallic element related to sulfur and tellurium |
| silicon, Si, atomic number 14 | A tetravalent nonmetallic element |
| sulfur, S, sulphur, atomic number 16 | An abundant tasteless odorless multivalent nonmetallic element |
| tellurium, Te, atomic number 52 | A brittle / brittle silver-white metalloid element that is related to selenium and sulfur |
| trace element | An element that occurs at very small quantities in the body but is nonetheless important for many biological processes |
| transactinide | Any of the artificially produced elements with atomic numbers greater than 103 |
| transuranic element | Any element having an atomic number greater than 92 (which is the atomic number of uranium) |
| ununbium, Uub, element 112, atomic number 112 | A radioactive transuranic element |
| ununhexium, Uuh, element 116, atomic number 116 | A radioactive transuranic element |
| ununpentium, Uup, element 115, atomic number 115 | A radioactive transuranic element |
| ununquadium, Uuq, element 114, atomic number 114 | A radioactive transuranic element |
| ununtrium, Uut, element 113, atomic number 113 | A radioactive transuranic element |
| xenon, Xe, atomic number 54 | A colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts |
| Broader | substance | The real physical matter of which a person or thing consists |
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| Spanish | elemento, elemento químico |
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| Catalan | element, element químic |
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