adjective sub·fluvial \"+\

Definition of subfluvial

  1. 1 :  situated, taking place, or formed at the bottom of a body of water (such as a river) subfluvial cables a subfluvial deposit of silt

  2. 2 :  passing under a river a subfluvial tunnel

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Origin and Etymology of subfluvial

sub- + fluvial

Seen and Heard

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a rounded knoll or a ridge of ice

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