The ornamental design for a displayscreen with a transitional graphical user interface, as shown and described.
FIG. 1 is a front view of a first image in a sequence for a display screen with a transitional graphical user interface;
FIG. 2 is a front view of a second image thereof;
FIG. 3 is a front view of a third image thereof;
FIG. 4 is a front view of a fourth image thereof; and,
FIG. 5 is a front view of a fifth image thereof.
The exterior border broken line illustrates a display screen and forms no part of the claimed design. The broken lines of text, numbers, icons, and boxes demonstrating portions of a graphical user interface displayed on the display screen in all views form no part of the claimed design. The areas filled in with pixels illustrate contrasting appearance, within parts in views of the graphical user interface displayed on the display screen, and form a part of the claimed design. The areas filled in with vertical fill lines illustrate an additional contrasting appearance of a background fill, within parts in views of the graphical user interface displayed on the display screen, and form a part of the claimed design.
The appearance of the image sequentially transitions between images shown in FIGS. 1 through 5. The process or period in which one image changes to another forms no part of the claimed design.