noun
arc; curved segment
Used for an arc-shaped curve, especially in technical, design, graphics, or geometry-related contexts.
CADで半径五センチのアークを描いた。
I drew an arc with a radius of five centimeters in CAD.
noun
electric arc
Electrical or welding use; equivalent in meaning to 電弧, but アーク is common in technical terms such as アーク溶接.
See also: 電弧
A strong electric arc occurred during welding.
アーク溶接では強い光に注意が必要だ。
In arc welding, you need to be careful of the intense light.