gram-atom

or gram atom


noun Chemistry.

the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element.
Also called gram-atomic mass, gram-a·tom·ic weight [gram-uh-tom-ik, -tom-] /ˈgræm əˈtɒm ɪk, -ˌtɒm-/.

Origin of gram-atom

First recorded in 1895–1900