Display screen or portion thereof with transitional graphical user interface

Description

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

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof; and,

FIG. 5 is a fifth image thereof.

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

The outer broken line in the figures illustrates a display screen or portion thereof and forms no part of the claimed design. The remainder of the broken lines in the figures illustrate portions of the graphical user interface and form no part of the claimed design.

Claims

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