Display screen or portion thereof with transitional graphical user interface

Abstract

Description

FIG. 1 is the first image in a sequence for a display screen or portion thereof with transitional graphical user interface showing our new design; and,

FIG. 2 is a front view of the second image thereof.

The outermost 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 graphical user interface which form no part of the claimed design.

The appearance of the graphical user interface sequentially transitions between the images shown in FIGS. 1 and 2. The process or period in which one image transitions to another forms no part of the claimed design.

The grayscale tones shown in the figures represent a contrast in appearance.

Claims

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