overturn
verb
overturned;
overturning;
overturns
Definition of overturn
(Entry 1 of 2)
1
: to cause to turn over : upset
overturned the vase
2a
: invalidate, destroy
the degree to which accident could overturn the schemes of wise men— Oscar Handlin
b
: reverse sense 2a
overturn a court ruling
overturn
nounDefinition of overturn (Entry 2 of 2)
1
: the act of overturning : the state of being overturned
2
: the sinking of surface water and rise of bottom water in a lake or sea that results from changes in temperature that commonly occur in spring and fall
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