-ˈnäməˌnād.ə(r), -ātə- noun
( -s )
1. : the part of a fraction that is below the horizontal or slanting line signifying division and that in fractions with numerator 1 indicates into how many parts the unit is supposed to be divided : divisor
2. archaic : one that denominates
3. : a common trait
only a single denominator do they share — Osbert Sitwell
: the average level (as of taste or opinion) : standard
manufacturers catering to a safely low denominator of public taste — Time
— see common denominator