1

upthrow

verb up·throw \ ˈəp-ˌthrō \

Definition of upthrow

upthrew play \ˈəp-ˌthrü\; upthrown play \ˈəp-ˌthrōn\; upthrowing
transitive verb
:to throw or thrust upward

First Known Use of upthrow

14th century


2

upthrow

noun

Definition of upthrow

:an upward displacement (as of a rock stratum) :upheaval, upthrust

First Known Use of upthrow

1807


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