noun
right-hand edge; rightmost edge
Technical term used in contexts like geometry, layout, or positioning to refer to the extreme right boundary.
図形の右方端に線を引いてください。
Draw a line at the right-hand edge of the figure.
More common word for 'right edge'; 右方端 is more explicit about the directional aspect.
Compound of 右方 (right side) + 端 (edge). The exact historical derivation is uncertain, but the meaning is transparent from its components.