peralkaline

adjective

per·​alkaline

¦pər‧,

(ˈ)per+

: having a molecular proportion of alumina less than that of soda and potash combined

—used of an igneous rock

Word History

Etymology

per- + alkaline

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!