Try Our Apps


The Best Internet Slang

known quantity

Mathematics. a quantity whose value is given: in algebra, frequently represented by a letter from the first part of the alphabet, as a, b, or c.
any factor, circumstance, etc., that is already accepted or familiar:
Her honesty is a known quantity.
Origin of known quantity
First recorded in 1975-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for known quantity
Contemporary Examples
Historical Examples
  • I should thus get the half weight of my body—a known quantity, you will recollect.

    The Cliff Climbers Captain Mayne Reid
  • These tanks are filled with water and a known quantity of slaked lime.

    The Manufacture of Paper Robert Walter Sindall
  • The individual with the point of view must, of course, be a known quantity.

    The Serf Guy Thorne
  • The temper of Lady Dawlish is a known quantity, and the quality of it is alarming.

  • She had an atomic weight upon which you could depend as upon any other known quantity.

    Unveiling a Parallel

    Alice Ilgenfritz Jones and Ella Marchant

Word of the Day

Difficulty index for known quantity

Few English speakers likely know this word

Word Value for known

Scrabble Words With Friends

Nearby words for known quantity