Decigram \Dec"i*gram\, Decigramme \Dec"i*gramme\, n. [F. d['e]cigramme; pref. d['e]ci- tenth (fr. L. decimus) + gramme.] A quantity of mass in the metric system equal to one tenth of a gram, and equal to 1.5432 grains avoirdupois. See 3rd {gram}. [1913 Webster] Decil