Definition of spiral verb from the Oxford Advanced Learner's Dictionary

     

    spiral

     verb
    verb
    BrE BrE//ˈspaɪrəl//
     
    ; NAmE NAmE//ˈspaɪrəl//
     
    Verb Forms present simple I / you / we / they spiral
    BrE BrE//ˈspaɪrəl//
     
    ; NAmE NAmE//ˈspaɪrəl//
     
    he / she / it spirals
    BrE BrE//ˈspaɪrəlz//
     
    ; NAmE NAmE//ˈspaɪrəlz//
     
    past simple spiralled
    BrE BrE//ˈspaɪrəld//
     
    ; NAmE NAmE//ˈspaɪrəld//
     
    past participle spiralled
    BrE BrE//ˈspaɪrəld//
     
    ; NAmE NAmE//ˈspaɪrəld//
     
    (usually North American English) past simple spiraled
    BrE BrE//ˈspaɪrəld//
     
    ; NAmE NAmE//ˈspaɪrəld//
     
    (usually North American English) past participle spiraled
    BrE BrE//ˈspaɪrəld//
     
    ; NAmE NAmE//ˈspaɪrəld//
     
    -ing form spiralling
    BrE BrE//ˈspaɪrəlɪŋ//
     
    ; NAmE NAmE//ˈspaɪrəlɪŋ//
     
    (usually North American English) -ing form spiraling
    BrE BrE//ˈspaɪrəlɪŋ//
     
    ; NAmE NAmE//ˈspaɪrəlɪŋ//
     
    Economy
     
    jump to other results
  1. 1[intransitive] (+ adv./prep.) to move in continuous circles, going upwards or downwards Smoke spiralled into the sky. The plane spiralled down to the ground.
  2. 2[intransitive] to increase rapidly the spiralling cost of health care + adv./prep. Prices are spiralling out of control. See related entries: Economy
  3. Word Origin mid 16th cent. (as an adjective): from medieval Latin spiralis, from Latin spira ‘coil’, from Greek speira ‘a coil’. Phrasal Verbsspiral down
See the Oxford Advanced American Dictionary entry: spiral