noun
single file; Indian file; single column
Primarily a military or formation term for a line of people or things arranged one behind another. Also used in contexts like marching, parades, or data presentation.
兵士たちは単縦列で山道を進んだ。
The soldiers advanced along the mountain path in single file.
データを単縦列に並べて表示する。
Display the data arranged in a single column.
一列 is a more common, everyday term for 'single line' or 'single row', whereas 単縦列 is a technical term used in military or formal contexts.
Compound of 単 (single) + 縦列 (column, file). The reading たんじゅうれつ follows standard on'yomi. The term is primarily used in military and technical contexts.