Display screen or portion thereof with transitional graphical user interface

Description

FIG. 1 is a front view of the first image in a sequence of a first embodiment of a display screen or portion thereof with transitional graphical user interface showing our new design;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof;

FIG. 4 is the fourth image thereof;

FIG. 5 is the fifth image thereof;

FIG. 6 is a front view of the first image in a sequence of a second embodiment of a display screen or portion thereof with transitional graphical user interface showing our new design;

FIG. 7 is the second image thereof;

FIG. 8 is the third image thereof; and,

FIG. 9 is the fourth image thereof.

The outer perimeter broken lines in the figures depict a display screen or portion thereof and form no part of the claimed design. The remaining broken lines in the figures depict portions of the transitional graphical user interface which form no part of the claimed design.

The appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 1 through 5 and FIGS. 6 through 9, respectively. The process or period in which one image transitions to another forms no part of the claimed design.

The grayscale in the drawings indicates a contrast of appearance.

Claims

We claim the ornamental design for a display screen or portion thereof with transitional graphical user interface, as shown and described.