1. The state or quality of being one; singleness. 2. The state or quality of being in accord; harmony. 3. The combination or arrangement of parts into a whole; unification. 4. A combination or union thus formed. 5. Emmeline Pankhurst 6. An ordering of all elements in a work of art or literature so that each contributes to a unified aesthetic effect. 7. The effect thus produced. 8. stating that a drama should have but one plot, which should take place in a single day and be confined to a single locale. 9. The number 1.