Display Screen or Portion Thereof with Transitional Graphical User Interface

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

FIG. 2 is the second image thereof;

FIG. 3 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a second embodiment;

FIG. 4 is the second image thereof;

FIG. 5 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a third embodiment;

FIG. 6 is the second image thereof;

FIG. 7 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a fourth embodiment;

FIG. 8 is the second image thereof;

FIG. 9 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a fifth embodiment;

FIG. 10 is the second image thereof;

FIG. 11 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a sixth embodiment;

FIG. 12 is the second image thereof;

FIG. 13 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a seventh embodiment;

FIG. 14 is the second image thereof;

FIG. 15 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to an eighth embodiment;

FIG. 16 is the second image thereof;

FIG. 17 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a ninth embodiment;

FIG. 18 is the second image thereof;

FIG. 19 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a tenth embodiment;

FIG. 20 is the second image thereof;

FIG. 21 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to an eleventh embodiment;

FIG. 22 is the second image thereof;

FIG. 23 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design according to a twelfth embodiment; and,

FIG. 24 is the second image thereof.

The dashed broken line perimeter in the figures shows a display screen or portion thereof and forms no part of the claimed design.

The appearance of the graphical user interface sequentially transitions between the images shown in FIGS. 1 - 2 , 3 - 4 , 5 - 6 , 7 - 8 , 9 - 10 , 11 - 12 , 13 - 14 , 15 - 16 , 17 - 18 , 19 - 20 , 21 - 22 , and 23 - 24 , respectively. The process or period in which one image transitions to another image forms no part of the claimed design.