What term describes the smooth visual movement resulting from gradual changes among design elements?

The term that describes the smooth visual movement resulting from gradual changes among design elements is transition. In floral design, transition refers to the way in which elements such as color, shape, texture, and size interact to create a seamless flow throughout the arrangement. This smooth progression allows the eye to travel comfortably from one part of the design to another, enhancing the overall aesthetic and coherence of the piece.

Transition can be achieved through techniques that encourage gradual shifts, such as using similar colors or shapes that progress from one to another. This contrasts with other design principles like balance, which focuses on the arrangement's stability; proportion, which pertains to the size relationships between design elements; and rhythm, which relates more to the repeated elements creating a sense of movement. While rhythm can also involve movement, it does so through repetition rather than the gradual change emphasized in transition.