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 my new design according to a first embodiment;

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 display screen or portion thereof with transitional graphical user interface showing my new design according to a second embodiment;

FIG. 7 is the second image thereof;

FIG. 8 is the third image thereof;

FIG. 9 is the fourth image thereof;

FIG. 10 is the fifth 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 my new design according to a third embodiment;

FIG. 12 is the second image thereof;

FIG. 13 is the third image thereof;

FIG. 14 is the fourth image thereof;

FIG. 15 is the fifth image thereof;

FIG. 16 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing my new design according to a fourth embodiment;

FIG. 17 is the second image thereof;

FIG. 18 is the third image thereof;

FIG. 19 is the fourth image thereof;

FIG. 20 is the fifth 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 my new design according to a fifth embodiment;

FIG. 22 is the second image thereof;

FIG. 23 is the third image thereof;

FIG. 24 is the fourth image thereof;

FIG. 25 is the fifth image thereof;

FIG. 26 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing my new design according to a sixth embodiment;

FIG. 27 is the second image thereof;

FIG. 28 is the third image thereof;

FIG. 29 is the fourth image thereof;

FIG. 30 is the fifth image thereof;

FIG. 31 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing my new design according to a seventh embodiment;

FIG. 32 is the second image thereof;

FIG. 33 is the third image thereof;

FIG. 34 is the fourth image thereof;

FIG. 35 is the fifth image thereof;

FIG. 36 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing my new design according to an eighth embodiment;

FIG. 37 is the second image thereof;

FIG. 38 is the third image thereof;

FIG. 39 is the fourth image thereof;

FIG. 40 is the fifth image thereof;

FIG. 41 is a front view of the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing my new design according to a ninth embodiment;

FIG. 42 is the second image thereof;

FIG. 43 is the third image thereof;

FIG. 44 is the fourth image thereof; and,

FIG. 45 is the fifth image thereof.

The dashed broken line perimeter in the figure drawings show a display screen or portion thereof and form no part of the claimed design. The remaining dashed broken lines in the drawings illustrate portions of the graphical user interface that form no part of the claimed design.

The appearance of the graphical user interface sequentially transitions between the images shown in FIGS. 1 - 5 , 6 - 10 , 11 - 15 , 16 - 20 , 21 - 25 , 26 - 30 , 31 - 35 , 36 - 40 , 41 - 45 , respectively. The process or period in which one image transitions to another image forms no part of the claimed design.