noun, noun or participle which takes 'suru', transitive verb
cutting; severing; sectioning
General use for cutting something through or into sections, often with tools, machinery, or a clear cut line. As a suru verb it is transitive: Xを切断する.
作業員が金属パイプを切断した。
The worker cut the metal pipe.
図面の線に沿っ
Cut the board along the line in the drawing.
noun, noun or participle which takes 'suru', transitive verb
amputation
Medical use for surgically removing a limb, finger, or other body part by cutting. More specific medical wording such as 切除 may also appear depending on what is removed.
医師は壊死した指を切断した。
The doctor amputated the necrotic finger.
noun, noun or participle which takes 'suru', transitive verb
disconnection; cutoff; severance of a connection
Used for physically or functionally severing a connection, such as a cable, circuit, power supply, communications line, or network link. Often sounds more technical or formal than simply 切る.
工事中に通信ケーブルが切断された。
The communications cable was severed during the construction work.
保守作業の前に回線を切断してください。
Please disconnect the line before maintenance work.