Definition of base metal
1 : a metal or alloy (such as zinc, lead, or brass) of comparatively low value and relatively inferior in certain properties (such as resistance to corrosion) —opposed to noble metal
2 : the metal to which a coating or plating is applied : the metal existing underneath a coating or plating
3 : the chief constituent of any alloy
4 : the metal composing parts to be welded
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of base metal
Seen and Heard
What made you want to look up base metal? Please tell us where you read or heard it (including the quote, if possible).