Simple Definition of lowest common denominator
from our Learner's Dictionarylowest common denominator
noun
1
mathematics
: the smallest number that can be divided exactly by all the numbers below the lines in a group of two or more fractions
called also (US) least common denominator
2
disapproving
—used to say that the quality of something is poor because it is designed or intended to appeal to the largest possible number of people
The movie appeals to the lowest common denominator.
Television programming has sunk to the lowest common denominator.
Cite this Entry
“Lowest common denominator.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/lowest%20common%20denominator. Accessed 17 Apr. 2026.
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