zero–zero

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adjective ze·ro–ze·ro \ˈzē-(ˌ)rō-ˈzē-(ˌ)rō, ˈzir-(ˌ)ō-ˈzir-(ˌ)ō\

Definition of zero–zero

  1. 1 :  characterized by or being atmospheric conditions that reduce ceiling and visibility to zero

  2. 2 :  limited to zero by atmospheric conditions

First Known Use of zero–zero

circa 1939


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