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  1. atomic number love

Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. The number of protons in an atomic nucleus.

Wiktionary

  1. n. physics, chemistry The number, equal to the number of protons in an atom that determines its chemical properties. Symbol: Z

WordNet 3.0

  1. n. 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

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‘atomic number’ has been looked up 840 times, added to 5 lists, and is not a valid Scrabble word.