Dictionary.com
definitions

hectogram

or hek·to·gram

[hek-tuh-gram]
noun
  1. a unit of mass or weight equal to 100 grams, equivalent to 3.527 ounces avoirdupois. Abbreviation: hg
Also especially British, hec·to·gramme.

Origin of hectogram

First recorded in 1800–10; hecto- + -gram2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hectogram

hectogram

hectogramme

noun
  1. one hundred grams. 1 hectogram is equivalent to 3.527 ouncesSymbol: hg
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012