Atomic Number:

Dictionary definition: The number of protons in the nucleus of one atom of an element.
Cite: great source education group. “Periodic Table.” Physical Science. (2006). 265.

Our definition of the word in kid-friendly language: it tells how much protons, neutrons, and electrons there are in each element.

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MLA citation: Gagnon, Steve. “Atomic number.” 2010.
http://education.jlab.org/glossary/atomicnumber.html

Non example: atomic mass

How we can remember the word: We will remember ‘Atomic Number’ by just taking off the atomic and only use the number part.

Synonyms: nucleuon number