1. n. (also gramme) a metric unit of mass equal to one-thousandth of a kilogram.
Phrases and idioms:
gram-atom Chem. the quantity of a chemical element equal to its relative atomic mass in grams (see MOLE(4)). gram-equivalent Chem. the quantity of a substance equal to its equivalent weight in grams. gram-molecule Chem. the quantity of a substance equal to its relative molecular mass in grams.
Etymology: F gramme f. Gk gramma small weight 2. n. any of various pulses used as food.
Etymology: Port. gr|.o f. L granum grain