1the state of being united or joined as a whole:European unityways of preserving family unity
the state of forming a complete and harmonious whole, especially in an artistic context:the repeated phrase gives the piece unity and cohesion
[count noun] a thing forming a complex whole:they speak of the three parts as a unity
2 Mathematics the number one:the slope of each dotted line is less than unity
3 [count noun] each of the three dramatic principles requiring limitation of the supposed time of a drama to that occupied in acting it or to a single day ( unity of time), use of one scene throughout ( unity of place), and concentration on the development of a single plot ( unity of action).
