dividerPronunciation: /dɪˈvʌɪdə/Translate divider | into Italian | into Spanish Definition of divider noun 1a person or thing that divides a whole into parts. (also room divider) a screen or piece of furniture that divides a room into two parts. an issue on which opinions are divided:on the Labour side, the big divider was still nuclear weapons 2 (dividers) a measuring compass, especially one with a screw for making fine adjustments. divider in other Oxford dictionaries Definition of divider in the US English dictionary