Search Result for "atomic number":
Wordnet 3.0

NOUN (1)

1. the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element; 



WordNet (r) 3.0 (2006):

atomic number
    n 1: the order of an element in Mendeleyev's table of the
         elements; equal to the number of protons in the nucleus or
         electrons in the neutral state of an atom of an element