The ornamental design for an electrode, as shown and described.
FIG. 1 is a perspective view of a first embodiment of an electrode in accordance with the claimed design.
FIG. 2 is a top view of the electrode in FIG. 1.
FIG. 3 is a front view of the electrode in FIG. 1. The rear view, left side view, and right side view of the electrode in FIG. 1 are substantially similar to the front view of the electrode shown in FIG. 3.
FIG. 4 is a bottom view of the electrode in FIG. 1.
FIG. 5 is a perspective view of a second embodiment of the electrode in accordance with the claimed design.
FIG. 6 is a top view of the electrode in FIG. 5.
FIG. 7 is a front view of the electrode in FIG. 5. The rear view, left side view, and right side view of the electrode in FIG. 5 are substantially similar to the front view of the electrode shown in FIG. 7; and,
FIG. 8 is a bottom view of the electrode in FIG. 5.
The broken lines, the areas within them, and the areas bounded by broken lines and solid lines depict portions of the electrode that form no part of the claimed design.