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pro·ton

n :  an elementary particle that is identical with the nucleus of the hydrogen atom, that along with neutrons is a constituent of all other atomic nuclei, that carries a positive charge numerically equal to the charge of an electron, and that has a mass of 1.673×10-24 gram pro*ton*ic adj 
 
 
 
Similar sounding terms:  hy·per·to·nia  hy·per·to·ny  para·to·nia  peritonea 

 
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