(between two numbers a and b) a number x for which a/x = x/b: The number 3 is a mean proportional between 1 and 9.
Can You Ace This Quiz About “Compliment” vs. “Complement”?
Take this quiz to see if you really know the difference between “compliment” and “complement"!
Question 1 of 11
“Compliment” and “complement” had a shared meaning a long time ago, but today they are no longer interchangeable.
Origin of mean proportional
First recorded in 1565–75
Words nearby mean proportional
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020