noun which may take the genitive case particle 'no', noun
portrait orientation; vertical placement
Describes an object placed or oriented with its longer side vertical, such as a sheet of paper, a monitor, or a game console. Often used with ～にする or ～で置く.
Please print this document in portrait orientation.
The PS5 can be placed either vertically or horizontally.
Compound of 縦 (たて, 'vertical') and 置き (おき, the continuative form of 置く, 'to place').