Gross (unit)

In English and related languages, several terms involving the words "great" or "gross" (possibly, from thick) relate to numbers involving multiples of exponents of twelve (dozen):

• A gross refers to a group of 144 items (a dozen dozen or a square dozen).
• A great gross refers to a group of 1728 items (a dozen gross or a cubic dozen).
• A small gross or a great hundred refers to a group of 120 items (ten dozen).

A gross may be abbreviated as "gr" or "gro".