Mars yellow

noun

1

: an iron yellow artist's pigment made usually by precipitating an iron salt with alkali and heating the product

2

or mars yellow : a moderate to strong orange that is yellower and darker than carrot red and darker than zinc orange or sunburst

called also iron yellow, siderin yellow

Word History

Etymology

from mars (iron)

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!