metric weight unit met·ric·weigh·tunit uncommon noun 1. a decimal unit of weight based on the gram Synonymsmetric weight unitweight unit Related words Broader terms mass unitmetric unit Narrower terms microgrammilligramnanogramgraindecigramcaratgramgram atom Parts metric system WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
