ion definición, ion significado | diccionario de inglés definición

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ion

  

      n   an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons  
   See also       cation       anion  
     (C19: from Greek, literally: going, from ienai to go)  


ammonium ion  
      n   the ion NH4+, formed from ammonia and present in aqueous solutions of ammonia and in many salts  
carbonium ion  
      n     (Chem)   a positively charged organic ion, such as H3C+, derived from a free radical by removal of one electron  
   Compare       carbanion  
hydrogen ion  
      n  
1    an ionized hydrogen atom, occurring in plasmas and in aqueous solutions of acids, in which it is solvated by one or more water molecules; proton. Formula: H+  
2    an ionized hydrogen molecule; hydrogen molecular ion. Formula: H2+  
hydronium ion  
      n     (Chem)      another name for       hydroxonium ion  
     (C20: from hydro- + (amm)onium)  
hydroxonium ion  
      n   a positive ion, H3O+, formed by the attachment of a proton to a water molecule: occurs in solutions of acids and behaves like a hydrogen ion,   (Also called)    hydronium ion  
-ion  
      suffix forming nouns   indicating an action, process, or state  
creation, objection         Compare       -ation       -tion  
     (from Latin -ion-, -io)  
ion engine  
      n   a type of rocket engine in which thrust is obtained by the electrostatic acceleration of charged positive ions  
   Compare       plasma engine  
ion exchange  
      n   the process in which ions are exchanged between a solution and an insoluble solid, usually a resin. It is used to soften water, to separate radioactive isotopes, and to purify certain industrial chemicals  
ion implantation  
      n   a technique used in the manufacture of semiconductor devices in which impurities are implanted by means of beams of electrically accelerated ions  
ion rocket  
      n   a rocket propelled by an ion engine  
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