- 1 [intransitive] to move in the shape of an arc For a few seconds a perfect rainbow arced across the city.
- 2 [intransitive] to form an electric arc Word Origin late Middle English (denoting the path of a celestial object, especially the sun, from horizon to horizon): via Old French from Latin arcus
BrE BrE//ɑːk//; NAmE NAmE//ɑːrk//(specialist)Verb Forms present simple I / you / we / they arc
BrE BrE//ɑːk//; NAmE NAmE//ɑːrk//he / she / it arcs
BrE BrE//ɑːks//; NAmE NAmE//ɑːrks//past simple arced
BrE BrE//ɑːkt//; NAmE NAmE//ɑːrkt//past participle arced
BrE BrE//ɑːkt//; NAmE NAmE//ɑːrkt//-ing form arcing
BrE BrE//ˈɑːkɪŋ//; NAmE NAmE//ˈɑːrkɪŋ//