dimensionless number

[ dĭ-mĕnshən-lĭs ]

A number representing a property of a physical system, but not measured on a scale of physical units (as of time, mass, or distance). Drag coefficients and stress, for example, are measured as dimensionless numbers.

QUIZZES

THE SEPTEMBER WORD OF THE DAY QUIZ HAS ARRIVED!

Go ahead, test your mental legerity to see how many words you remember from last month!
Question 1 of 10
Which definition best describes “spang”?
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.