gramma

The word 'gramma' is a variant spelling of 'gram', which entered English in the late 18th century from the French 'gramme'. The French term was itself derived from the Late Latin 'gramma', meaning a small weight, which originated from the Greek 'gramma' (γράμμα), signifying a small unit of weight and, more originally, a letter of the alphabet or a small mark. This Greek root is related to 'graphein' (γράφειν), meaning 'to write', drawing a conceptual link between the act of making a written mark and the notion of a minimal unit of measurement. The modern abstract meaning evolved from this ancient concept of a tiny, precisely defined unit.

The word is a simplex loanword from French. It cannot be meaningfully segmented into productive morphemes within modern English spelling.