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• gram-atom
  gram-atom

  noun

  the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element.
• gram atom
  gram atom

  noun

  an amount of an element equal to its atomic weight expressed in grams: now replaced by the mole See mole 4

gram-atom

American  

Or gram atom

noun

Chemistry.

1. the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element.

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gram atom British  

noun

1. an amount of an element equal to its atomic weight expressed in grams: now replaced by the mole See mole 4

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Etymology

Origin of gram-atom

First recorded in 1895–1900