proportional dividers

plural noun

: dividers having two legs pointed at both ends and joined by an adjustable pivot so that distances measured between the points at one end can be laid off in the same proportion by the points at the opposite end

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!