Dictionary

1undersurface

noun un·der·sur·face \ˈən-dər-ˌsər-fəs\

Definition of UNDERSURFACE

:  underside
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Examples of UNDERSURFACE

  1. <painted the undersurface of the plane blue>

First Known Use of UNDERSURFACE

1733

2undersurface

adjective un·der·sur·face \ˌən-dər-ˈsər-fəs\

Definition of UNDERSURFACE

:  existing or moving below the surface

First Known Use of UNDERSURFACE

circa 1934

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