grammage

About 0.01 uses per million words.

Meaning

1. noun The mass per area of paper measured in grams per square meter (g/m²).
2. noun The integral of matter density along the path (of a cosmic ray).

   grammage of cosmic rays around galactic supernova remnants

Similar words

gramme gram petagram gramma gigagramme petagramme megagramme gigagram gram-molecular weight megagram

Often followed by

of and is