The phrase "wide arc" means a large, sweeping movement or path. It describes a motion that covers a significant distance or trajectory. Full definition
In particular CS: GO players who run a low DPI for more accurate shooting will likely find the extra space incredibly valuable so that they can swing the mouse in wide arcs. (wolfsgamingblog.com)
• 16 - inch Cotton Chintz White shade • Polished chrome construction • Adjustable 270 rotation swivel arm • Parked or extended shade functionality • Opal acrylic diffuser for wide arc of light • 200 cm black cable with on / off switch • Slim flat base. (houseology.com)
And in response to this historic moment, she let her red - and - white Atomic skis glide a slow, wide arc around the finish area as if she were drifting in a dream. (si.com)