Definition of non-arcing in US English:

non-arcing

adjective

Electricity
  • Of a metal, especially a contact or terminal: that does not readily form an arc or allow one to be formed.

Origin

Late 19th century; earliest use found in Isaac Funk (1839–1912), publisher and reformer. From non- + arc + -ing.

Pronunciation

non-arcing

/nɒnˈɑːkɪŋ/